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OpenTunnel Designer Help

OpenTunnel Designer Help
  • OpenTunnel Designer Help
    • What's New
      • What's New in 2026 Release
      • What's New in 2025 Release
      • What's New in 2024 Update 2 Release
      • What's New in 2024 Update 1 Release
    • Let's Begin With OpenTunnel Designer
      • Quick Overview
        • Ribbon Interface
          • Ribbon Controls
        • Quick Access Toolbar
          • Customize Quick Access Toolbar
      • File tab and Backstage View
        • Tools
        • Settings
          • Users
            • Preferences
          • System (PC)
          • File
            • Color Table Dialog
              • Color Book Modify Color Dialog
                • Modify Color Dialog, True Color Tab
                • Modify Color Dialog, Color Book Tab
            • Design File Settings
              • Regression Slues Settings
          • Configuration
        • Properties
        • Print
        • Import
          • Common File Types
          • Exchange File Types
          • 3D Modeling File Types
          • Geospatial File Types
        • Export
          • Common File Types
          • Exchange File Types
          • 3D Modeling File Types
          • Visualization File Types
          • Geospatial File Types
        • Civil Tools
          • Downgrade DGN
          • Civil File Manager
            • Civil File Upgrade
          • DGN Checker
        • Publish iModel
        • Help
      • Important Microstation Concepts
      • ProjectWise Integration
      • Program Limitations
      • Using the Work Page
        • Manage Configuration Dialog
          • New Configuration Dialog
          • Connect to a New Configuration
          • Edit an Existing Configuration
        • Work Page
        • Create WorkSpace Dialog
        • Create WorkSet Dialog
          • WorkSet Templates
        • Edit WorkSet Dialog
        • Assign Project to WorkSet dialog
        • File Open dialog
        • (Technology Preview) Configuration Creator
          • To create a new Configuration
      • Fundamentals
        • Configuration Concepts
      • Subscription Entitlement Service
        • Bentley Licensing Tool
          • Options Dialog
          • To Reserve a License
          • To Release a License
        • Bentley Activation Wizard Dialog
    • OpenTunnel Designer Workflows
      • OpenTunnel Designer Workflow
        • Home
          • Primary
            • Managing Workset Data with Explorer
              • Introduction to Explorer
              • Common Tools
                • To Zoom to an Item
                • Querying Data in Explorer
              • File
              • Items
              • Reports
              • Resources
              • Sheet Index
              • Links
                • Managing Link Set in Explorer
                  • Working with Link Sets
                    • To Create a Link Set
                    • To Copy a Link Set
                    • To Import a Link Set from Another File
                    • To Rename a Link Set
                    • To Delete a Link Set
                  • Create a New Link Set Dialog
            • Attach Tools Dialog
              • References Dialog
              • Raster Manager
              • Point Cloud
              • Reality Mesh Attachments
            • Models Dialog
            • Level Display Dialog
            • Level Manager Dialog
            • Properties Dialog
            • More
          • Selection
            • Element Selection Tool
            • Select All Tool
            • Select None Tool
            • Fence Toolbox
              • Place Fence
              • Modify Fence
              • Manipulate Fence Contents
                • Copy Element
                • Using Handles
                • Using the Reset Pop-Up Menu
                • Working with AccuDraw
                • Special Fence Manipulations
                • Move Element
                • Scale
                • Rotate
                • Mirror
                • Construct Array
                • Using Multi-Lines
                • Stretch Element
                • Levels Configuration Variables
                • Preferences Dialog, Input Category
                • Context Menus
              • Delete Fence Contents
              • Drop Fence Contents
                • Drop Complex Status
              • Save Fence to File
              • Named Boundaries from Fences
            • Lock Tool
            • Unlock Tool
            • Bring to Front Tool
            • Cut Tool
            • Copy Tool
            • Paste Tools
        • Construction
        • Utilities
        • Civil
          • General Tools
            • General Geometry Import / Export
              • Import Geometry
              • Import Horizontal Geometry from ASCII File
              • Import Vertical Geometry From ASCII File
              • Export Geometry
            • General Geometry Design Elements
              • Set Active Profile
              • Set Active Terrain Model
              • Select By Graphical Filter
              • Create Civil Rule Feature
            • General Geometry Standards
              • Set Feature Definition
              • Features Definition Toolbar
              • Match Feature Definition
              • Civil Message Center
              • Set Element Information
            • Civil Accudraw
              • Getting Started with Civil Accudraw
                • Coordinate Display
                • Compass
                • Differences from MicroStation AccuDraw
              • Toolbox Civil Accudraw
                • Pop-up Toolbox
                • Accudraw Shortcuts Key-ins
              • Horizontal Ordinates
              • Z Ordinates
              • Angle Syntax
              • Settings Overview
                • Settings Operations
                • Settings Display
                • Settings Coordinates
                • Settings Favorites
            • Activate Rules
            • Geometry Reports
              • Horizontal Geometry Report
              • Map Check Report
              • Station Offset Report
              • Point Feature Station Offset Elevation Report
              • Station Base Report
              • Superelevation Report
            • Civil Analysis
              • Analyze Point
              • Analyze Between Points
              • Analyze Volume
              • Inverse Points
                • Input Types
                • To Inverse between Points
                • To Inverse Points on an Arc
                • To Inverse Points Radially
                • To Inverse Points Perpendicular between Points
                • To Inverse Points Perpendicular by Element
                • To Inverse Points by Element
              • Analyze Trace Slope
              • Analyze Pond
              • Element Component Quantities
              • Create Cut Fill Volumes
                • To Create Cut and Fill Volumes
              • 3D Drive Through
          • Horizontal
            • Horizontal Geometry Line
              • Line Between Points
              • Line to Element Tools
                • Line to Element
              • Line from Element Tools
                • Line From Element
              • Line between Arcs
              • Chamfer Between Points
            • Horizontal Geometry Arc
              • Circle
              • Arc Between Points
              • Arc to Element Tools
                • Arc to Element
              • Arc from Element Tools
                • Arc From Element
              • Arc Between Elements Tools
                • Arc Between Elements
              • Arc Between Arcs
              • Complex Transition between any Element and Arc
            • Horizontal Geometry Point
              • Place Point
              • Equal Space Points
                • Workflow: To Place a Point
            • Offsets and Tapers
              • Single Offset Entire Element
            • Reverse Curves
              • Reverse Curve by Angle
              • Reverse Transition
            • Horizontal Geometry Spiral
              • Spiral from Element
                • Options
              • Spiral between Elements
            • Horizontal Geometry Modify
              • Start Station
                • To Station an Element
              • Add Station Equation
                • To Add Station Equation
              • Copy Element
              • Insert Fillet
              • Append Element
            • Horizontal Geometry Complex
              • Complex by Element
              • Complex by PI
              • Complex Redefine
              • Define by Best Fit
          • Vertical
            • Open Profile Model
            • Set Active Profile
            • Multiple Profile
              • Open Multiple Profile
              • Multiple Profile Settings
              • Add Zone
              • Tracking and Analysis
                • Synchronize View
                • Tracking and Analysis Report
              • CAD Element
              • Edit Vertical Alignment
            • Profile Creation
              • Profile From Surface
              • Quick Profile From Surface
              • Project Profile to Element
              • Project Profile Range to Element
              • Project Extended Profile
              • Place Profile Intersection Point
            • Vertical Geometry Line
              • Profile Line Between Points
              • Profile Line to Element
              • Profile Line from Element
              • Profile Line between Elements
            • Vertical Geometry Curves
              • Profile Curve Between Points
              • Profile Curve to Element
              • Profile Curve From Element
              • Profile Curve Between Elements
            • Vertical Geometry Element Profiles
              • Quick Profile Transition
              • Profile by Constant Elevation
              • Define Profile by Slope from Point
              • Profile by Slope From Element
              • Profile by Variable Slope from Element
              • Profile by Vertical Offset from Element
              • Profile by 3D Element
            • Vertical Geometry Modify
              • Profile Insert Curve
              • Append Profile Element
            • Vertical Geometry Complex
              • Profile Complex by Elements
              • Profile Complex by PI
              • Define Profiles by Best Fit
              • Profile Insert Curve
              • Append Profile Element
              • Profile Reverse Transition
              • Profile Offset Transition
          • Superelevation
            • Superelevation Overview
              • Superelevation General Workflow
              • Explorer - Superelevation
              • Properties - Superelevation
            • Create
              • Create Superelevation Sections
              • Create Superelevation Lanes
                • Workflow For Through Lanes
                • Workflow For Auxiliary Items
            • Calculate
              • Calculate Superelevation
              • Edit Superelevation Rule File
              • Import Superelevation
              • Assign to Corridor
            • Edit
              • Insert Station Cross Slope
              • Superelevation Editor
            • Superelevation Report
            • Open Superelevation View
          • Open Cross Section View
          • Terrain Model
            • Terrain Import
              • Create From File
                • Create From File Workflow
                • Geographic Coordinate System Dialog
                  • Properties Dialog
                    • To Review or Modify Information About an Element
                • Define Placemark Monument
                • Select Geographic Coordinate System
                • Geographic Coordinate System Properties Dialog
                  • Reprojecting Design Data
                    • To Set Reprojection Settings
                    • Reprojection Settings Dialog
                    • Vertical Datum
                      • To Change the Vertical Datum of a GCS
                  • Local Transforms
                    • Workflow for Local Transforms
                    • Local Transforms and Pushing or Pulling Geographic Coordinate Systems to or from Reference Attachments
                • Select Geographic Coordinate System Dialog
                • Geographic Coordinate System From Placemarks Dialog
                • Geographic Coordinate System From Reference Dialog
                • Set Geographic Coordinate System In References Dialog
                • Reprojection Settings Dialog
              • Create From Graphical Filter
                • Create By Graphical Filter Workflow
                • Terrain Filter Manager
              • Create From Cesium World Terrain
            • Set Active Terrain Model
            • Add Features
            • Remove Features
            • Change Feature Type
            • Edit Model
            • Add Terrain Model Boundary
            • Remove Terrain Model Boundary
          • 3D Geometry
            • Create 3D By Plan Profile
            • Create 3D By Slope To Target
            • Create 3D By Volume
        • Analysis And Reporting
        • View
        • Collaborate
        • Help
      • Rebar Modeler Workflow
      • Geospatial Context Workflow
        • Home Tab
          • Feature Services
            • Feature Service Manager Dialog
            • Query Features
            • Clear Features
            • Clear All Features
            • ArcGIS Enterprise Portal Configuration
            • Esri ArcGIS (TM) REST Map and Image Services - Creating a New Map Dialog
              • ESRI ArcGIS (TM) Map Service Manager Dialog
        • View
        • Drawing
        • Drawing Aids
        • Help
      • Drawing Workflow
        • Home
        • View
        • Annotate
          • Text Toolbox
            • Place Text
              • To Place Text at the Active Angle and Active Text Settings
              • To Bypass the Text Editor Window
              • To Place Fitted Text
              • To Fill In Empty Text Node(s)
              • To Place Text That Wraps to a Graphically-Defined Width
            • Place Text Along
              • To Place Text Above or Below an Element
              • To Place Text on an Element
              • To Place Text Along an Element
            • Place Note
              • To Place a Note
              • To Place a Callout
            • Edit Text
              • To Edit Text
            • Spell Checker
              • To Search for and Correct Spelling Errors in the Active Model
              • To Search for and Correct Spelling Errors in a Text Element, Text Node, Tag, Dimension, Note or Symbol
              • To Search for and Correct Spelling Errors in a Selection Set
              • To Search for and Correct Spelling Errors Within a Fence Contents
              • To Search for and Correct Spelling Errors Before Placing Text
              • To Add a User Defined Dictionary
              • To Add the Currently Flagged Word to the User Dictionary
              • To Add a Word to the User Dictionary
              • To Delete a Word from the User Dictionary
              • Spelling Dialog
              • Manage User Dictionary Dialog
            • Change Text Case
              • To Change the Case of Text
              • To Change the Case of Text with a Fence
            • Display Text Attributes
              • To Display Attributes of a Text Element
            • Match Text Attributes
              • To Match the Active Text Settings to the Attributes of a Text Element
            • Change Text Attributes
              • To Change a Text or Tag Element's Attributes (Those That Are Set to On)
            • Place Text Node
              • To Place a Text Node
            • Copy and Increment Text
              • To Copy and Increment Text
            • Copy Enter Data Field
              • To Copy an Enter Data Field
            • Copy and Increment Enter Data Field
              • To Copy and Increment an Enter Data Field
            • Fill In Single Enter Data Field
              • To Fill In an Enter Data Field
            • Automatic Fill In Enter Data Fields
              • To Automatically Fill In Enter Data Fields
            • Update All Fields
              • To Update All Fields in the Text Element(s)
            • Drop Text
              • To Convert Text to Individual Elements
          • Labels
            • To Place a Label with a Leader
            • To Place a Label Without a Leader
            • Place Label
            • Filtering Cell Names in the Place Label Tool
          • Dimensioning
            • Dimension Elements
            • To Turn On or Off the Display of Dimensions in a View
            • To Turn On or Off the Display of Dimensions in All Open Views
            • Dimension Styles
              • To Create a Dimension Style
              • To Make a Dimension Style the Active Style
              • To Save a Dimension Style to the DGN File
              • To Copy a Dimension Style
              • To Remap Dimension Styles
              • To Delete Dimension Styles
              • To Reset a Dimension Style
              • To Modify Settings for a Single Dimension Style
              • To Modify Settings for Multiple Dimension Styles
              • To Compare Two Dimension Styles
              • To Display Differences Between Two Dimension Styles
              • To Turn the Preview Pane On or Off
              • To Control Dimensions Displayed in the Preview Pane
              • To Turn the Dimension Styles List Box On or Off
              • Dimension Styles Dialog
                • Dimension Styles Dialog Icons
                • Dimension Styles Dialog, Geometry Tab
                • Dimension Styles Dialog, Units Tab
                • Dimension Styles Dialog, Text Tab
                • Dimension Styles Dialog, Symbology Tab
                • Dimension Styles Dialog, Advanced Tab
              • Remap Elements to Dimension Style Dialog
            • Dimension Style Libraries
              • To Save and Modify a Dimension Style from a Library
              • To Compare a Local Dimension Style with the Dimension Style Library
              • To Display Differences Between a Local Dimension Style and the Dimension Style Library
              • To Import Dimension Styles from Another File or DGN Library
              • To Update Dimension Styles from Dimension Style Libraries
            • Aligning Dimension Styles
            • Associating Dimensions with Elements
              • To Place Association Points
            • Dimensions Toolbox
              • Element Dimensioning
                • To Dimension an Element
                • To Label the Length and Direction of a Line
                • To Dimension a Distance Perpendicularly from an Element (at a Separately-Identified Point)
                • To Dimension the Radius of a Circular Element
                • To Dimension the Radius of a Circular Element with an Extended Leader
                • To Dimension the Diameter of a Circular Element
                • To Dimension the Diameter of a Circular Element with an Extended Leader
                • To Dimension Diameter with the Dimension Placed Parallel
              • Linear Dimensioning
                • To Dimension the Distance Between Two Points
                • To Create a Linear Dimension by Selecting Multiple Elements
                • To Create a Stacked Linear Dimension from an Origin
                • To Create a Chained Linear Dimension from an Origin
              • Angular Dimensioning
                • To Dimension an Angle
                • To Dimension an Angle(s) from an Origin
                • To Dimension the Angle Between Two Lines
                • To Dimension the Size of an Arc
                • To Dimension an Arc from an Origin
              • Ordinate Dimensioning
                • To Place an Ordinate Dimension
              • Change Dimension
                • To Change a Dimension to the Active Dimension Attributes
                • To Change a Dimension by Changing the Dimension Style
                • To Change Only Some of a Dimension's Attributes
              • Match Dimension Settings
                • To Match Dimension Settings
              • Drop Dimension Element
                • To Break Up a Dimension Element
                • To Break Up Dimension Elements in the Fence Contents
              • Reassociate Dimension
                • To Recreate a Dimension's Associativity Individually
                • To Recreate Several Dimensions' Associativity Using a Fence
              • Place Center Mark
                • To Place a Center Mark in a Circle or Arc Using the Place Center Mark Tool
            • Angular Dimensions Toolbox
              • Dimension Angle from X-Axis
                • To Dimension an Angle from the X-Axis
              • Dimension Angle from Y-Axis
                • To Dimension an Angle from the Y-Axis
              • Dimension Chamfer
                • To Dimension the Angle of a Chamfer
            • XYZ Text Toolbox
              • Label Point Coordinate
                • To Label Coordinates with a Data Point
              • Label Element Coordinates
                • To Label Coordinates of a Single Element
                • To Label Coordinates of Fenced Elements
                • To Label Coordinates of All Elements in a Design
              • Export Coordinates
                • To Export Coordinates of a Single Element to a Text File
                • To Export Coordinates of Fenced Elements to a Text File
                • To Export All Coordinates of Elements in the Design File to a Text File
              • Import Coordinates
                • To Import Coordinates from a Text File as Points
                • To Import Coordinates from a Text File as Text
                • To Import Coordinates from a Text File as Cells
            • Insert (Dimension) Vertex
              • To Add an Extension Line to a Dimension Element
            • Delete (Dimension) Vertex
              • To Delete an Extension Line
            • Dimensioning Key-ins
              • To Turn Off a Dimension's Extension Line
              • To Turn Off All of a Dimension's Extension Lines
              • To Turn On a Dimension's Extension Line
              • To Turn On All of a Dimension's Extension Lines
              • To Toggle the Display of a Dimension's Extension Lines
              • To Change the View That Determines the Orientation of Dimension Text
              • To Change the Dimension Text Justification
            • Changing Dimension Associations
              • To Drop an Association Point
              • To Reassociate an Extension Line to an Element
            • Modifying a Dimension Element and Dimension Text
              • To Move an Extension Line
              • To Modify the Length of an Extension Line
              • To Modify the Length of Extension Lines
              • To Move Dimension Text
              • To Edit Text in a Dimension Element
            • Dimension Audit
              • To Set Criteria for a Dimension Audit
              • To Find a Dimension Error
              • To Run Dimension Audit from Key-ins
              • Dimension Audit Dialog
          • Detailing
            • Placing Detailing Symbols
              • Detailing Symbol Styles
                • To Provide Custom Cells and Create Placeholder Fields
                • To Create a Detailing Symbol Style Using Custom Cells
                • Detailing Symbol Styles Dialog
              • Placing a Section Callout
                • To Open a Section View from a Callout in the Same View Window
                • To Open a Section View from a Callout in Another View Window
                • To Attach a Section View to a Sheet as a Reference
              • Placing a Section View on a Sheet
              • Placing Detail Callouts on Section View Attachments
              • Placing an Interior Elevation Callout
                • To Add Elevation Callouts to the Existing Interior Elevation Callout
                • To Delete Elevation Callouts in an Interior Elevation Callout
                • To Rotate the Elevation Callout in an Interior Elevation Callout
              • Modifying Properties of a Callout
                • To Modify a Callout by Selecting It
                • To Modify a Callout Through the Properties Dialog
                • To Modify a Callout by Modifying the Saved View
                • To Create a Step or a Gap in a Section or Plan Callout
                • To Merge the Step Handles of a Section or Plan Callout
              • Updating Placeholder Fields of a Callout
                • To Update Placeholder Fields for a 3D Design Model Referenced in a Sheet Model
                • To Update the Placeholder Fields of a Section Callout in a 2D Sheet Model
                • To Update the Placeholder Fields of a Detail Callout in a 2D Sheet Model
            • Detailing Symbols Toolbox
              • Place Section Callout
                • To Place a Section Callout
              • Place Detail Callout
                • To Place a Detail Callout
                • To Place a Detail Callout Using an Existing Element to Define the Detail Area
              • Place Elevation Callout
                • To Place a Single Elevation Callout
                • To Place an Interior Elevation Callout
              • Place Plan Callout
                • To Place a Plan Callout
              • Place Drawing Boundary
                • To Place a Drawing Boundary by Two Points
                • To Place a Drawing Boundary by Element
              • Place Title Text
                • To Place Title Text
            • Overview of Callouts in 3D
              • Workflow for Using Callouts in a Project
              • Association Lines
            • Using Callouts in 3D
              • To Display Sheet Annotations in a 3D Design Model
              • To Open a Reference Sheet Model from a Marker in a 3D Design Model
              • To Clip a Model from a Callout in a 3D Design Model
              • To Open a 3D Design Model from a Callout in a Sheet Model
              • To Open a Sheet Model from a Drawing Boundary Displayed in a 3D Design Model
              • To Open a Drawing Model from a Drawing Boundary in a Sheet Model
            • Mini Toolbar for Callouts
              • Apply View
                • To Apply the Saved View From a Callout in a 3D Design Model
              • Create Drawing
                • To Create a Saved View
              • Show Callouts
                • To View Callouts in a Design or Sheet Model
              • Place View on Drawing or Sheet
                • To Place a Saved View on a Drawing Model
            • Numbering Sheets and Drawings
              • To Navigate to a Drawing Boundary on a Sheet
              • To Change a Drawing Identifier in a Sheet Composition
            • Capturing Graphics in Dynamic Views
          • Cloud Toolbox
            • Cloud By Points
              • To Place a Revision Cloud
            • Cloud By Element
              • To Create a Revision Cloud from an Existing Closed Element
              • To Create Revision Clouds from Multiple Elements
          • Using Cells
            • Using Cells in 3D
            • Cells Toolbox
              • Place Active Cell
                • To Place the Active Cell
                • To Place Content from a Web Page as a Cell
              • Web-Drop Settings Dialog
              • Place Active Cell Matrix
                • To Place a Matrix of the Active Cell
              • Select and Place Cell
                • To Select and Place a Cell
              • Define Cell Origin
                • To Define a Cell Origin
              • Identify Cell
                • To Display a Cell's Name and Level
              • Place Active Line Terminator
                • To Place the Active Line Terminator
              • Replace Cells
                • Replacing Parametric Cells
                • To Update Cells from the Active Cell Library
                • To Replace Cells Individually or Globally
                • To Replace Individual or Multiple Cells Inside a Fence
                • To Individually Replace Cells Containing User Data
                • To Replace Cells from the System Command Line
              • Place Cell Index
                • To Create and Place a Cell Index
              • ANNOTATIONSCALE
                • To Select All Elements That Use Annotation Scale
            • Cell Library Dialog
              • Create Cell Dialog
              • Update Parametric Cell
                • To Update a Parametric Cell in a DGN with a Newer Version Having Updated Item Type and Parametric Information
                • To Place a Parametric Cell Containing Updated Versions of the Current Item Type Libraries in a DGN
              • Extract Cell Model
                • To overwrite a cell definition while extracting a cell model
            • Cells Configuration Variables
            • Hatching and Patterning
              • Controlling the Display of Patterns
                • To Turn the Display of Patterns On or Off in One or More Views
                • To Turn the Display of Patterns On or Off in All Open Views
              • Placing Patterns in the Design
              • Associative Patterns
              • Snappable Patterns
              • Excluding Areas Inside a Patterned Area from Patterning
              • Patterning Disjointed Regions
              • Cells Used for Patterning
                • Pattern Cells Supplied with the Product
                • Guidelines for Creating Pattern Cells
            • Patterning Toolbox
              • Hatch Area
                • To Hatch the Area Inside a Closed Element
                • To Hatch the Area Between Multi-Line Components
                • To Hatch a Fenced Area
                • To Hatch the Intersection or Union of Closed Elements
                • To Hatch the Difference Between Elements
                • To Hatch an Area Enclosed by Bounding Elements
                • To Hatch an Area Containing Nested Elements Within the Bounding Elements
                • To Hatch an Area Bounded by Intersecting Segments of Elements
                • To Hatch an Area Defined by Data Points
              • Crosshatch Area
              • Pattern Area
                • To Pattern the Area Inside a Closed Element Using a Cell
                • To Pattern the Area Inside a Closed Element Using a Pattern from a PAT File
                • To Pattern the Area Between Multi-Line Components
                • To Pattern a Fenced Area
                • To Pattern the Intersection or Union of Closed Elements
                • To Pattern the Difference Between Elements
                • To Pattern an Area Enclosed by Bounding Elements
                • To Pattern an Area Defined by Data Points
                • To Replace a Pattern Applied to an Area
                • To Modify the Settings for a Pattern Applied to an Area
              • Linear Pattern
                • To Pattern a Linear Element
              • Show Pattern Attributes
                • To Display the Angle and Scale of a Pattern Element
              • Match Pattern Attributes
                • To Match the Active Pattern Settings to Those of an Existing Pattern Element
              • Change Pattern
                • To Change an Existing Pattern to the Current Settings
              • Drop Associative Pattern
                • To Drop an Associative Pattern or Hatching
              • Delete Pattern
                • To Delete Patterning
          • Terrain Model Toolbox
            • Import LandXML Terrain Model
              • To Import a LandXML File
              • LandXML Import Dialog
            • Label Terrain Contours
              • To Label Terrain Contours
            • Label Terrain Spots
              • To Label Terrain Spots
        • Attach Tab
          • References, Raster Images, Point Clouds, and Reality Mesh
            • Attaching References
              • To Attach a Single Reference
              • To Attach a Model Reference from the Models Dialog
              • To Attach a Model Reference from the Explorer Dialog
              • To Attach a Saved View Reference from the Saved Views Dialog
              • To Attach a Saved View Reference from the Explorer Dialog
              • Attaching References with Recommended Settings
                • To Attach a Model Reference with Recommended Settings Using Drag-and-Drop Operation
                • To Attach a Model Reference with Recommended Settings Using the Attach Reference Dialog
                • To Attach a Saved View Reference with Recommended Settings
              • Attaching References Coincident to the Active Model
                • To Attach a Reference Coincident
                • To Attach Multiple References from a Single Directory
                • To Attach Multiple References from Multiple Folders
                • To Attach References Interactively by Using Drag-and-Drop Operation
                • To Attach a Model as a Coincident Reference Using Drag-and-Drop Operation
                • To Attach the Active Model to Itself as a Reference (Self-Reference)
              • Attaching References Using Views and Named Boundaries
                • To Attach a Reference by Using Standard Views
                • To Attach a Reference by Using a Named Boundary
                • To Attach a Reference by Using a Saved View
              • Making Portable Reference Attachments
                • To Attach a Model as a Reference Residing in a Directory Specified by a Configuration Variable
              • Locating Attachments
              • Locating Lost Attachments
                • To Update a Reference When OpenTunnel Designer Cannot Locate the File
              • Attaching Remote References
                • To Attach a Remote Reference
            • Reference Update Sequence
              • Adjusting the Update Sequence
                • To Modify the File Update Sequence
                • To Restore the Default Update Sequence
                • To Override the Custom Update Sequence with the Default
            • Working with Attached References
              • Clipping References
                • To Define a Reference Clipping Boundary by Using a Fence
                • To Define a Reference Clipping Boundary by Using a Named Fence
                • To Define a Reference Clipping Boundary by Using an Element
                • To Mask a Reference
                • To Selectively Delete Reference Clipping
                • To Define a Reference Front Clipping Plane (3D Only)
                • To Define a Reference Back Clipping Plane (3D Only)
                • Modifying Reference Clip Boundaries and Masks
                  • To Adjust a Single Vertex of a Reference Clip Boundary and Mask
                  • To Adjust Multiple Vertices of a Reference Clip Boundary and Mask
              • Manipulating References
                • Using Standard Tools to Manipulate References
                • Using the Reference Tools to Manipulate References
                  • To Move a Reference Selected from the References Dialog List
                  • To Move a Reference by Using a Fence
                  • To Copy Elements from a Reference to the Active DGN File
                  • To Copy References Selected from the References Dialog List
                  • To Copy References by Using a Fence
                  • To Scale References Selected from the References Dialog List
                  • To Scale References Selected by Using a Fence
                  • To Rotate References Selected from the References Dialog List
                  • To Rotate References by Using a Fence
                  • To Mirror References Selected from the References Dialog List
                  • To Mirror References by Using a Fence
                  • To Copy and Fold a Reference About a Horizontal or Vertical Line
                  • To Copy and Fold a Reference About a Specified Line
                • Manipulating Masked Area of a Reference
                  • To Enable Manipulating Masked Area of a Reference
                • Temporarily Activating a Reference for In-Place Editing
                  • To Activate a Reference for In-Place Editing by Selecting an Element in the Reference
                  • To Activate a Reference for In-Place Editing from the References Dialog List
                  • To Deactivate a Reference and Release Its Lock
                  • To Deactivate a Reference Without Releasing Its Lock
                  • To Release the Lock on a Deactivated Reference
                • Manipulating Elements in a Cached Reference
                  • To Hide Elements in a Cached Reference
                  • To Copy and Manipulate Elements in a Cached Reference
                • Exchanging to a Reference
                  • To Exchange to a Reference Selected from the References Dialog List
                  • To Exchange to a Reference by Selecting a Referenced Element
                  • To Exchange to a Reference from a Key-in by Using the References Dialog
                  • To Exchange to a Reference Selected Graphically
                  • To Exchange to a Reference by Using a Key-in
              • Setting Reference Presentation
                • To Set Presentation Options for a Reference
              • Reloading References
                • To Reload a Reference
                • To Reload All Attached References
                • To Update Reference Elements in a View
              • Detaching References
                • To Detach References
                • To Detach All References
              • Controlling Reference Settings
                • To Turn On or Off the Display of a Reference
                • To Disable Reference Level Property Changes from Remaining in Effect Across Sessions
                • To Turn On or Off Snapping to Elements in a Reference
                • To Control Whether Elements in a Reference Can Be Identified (for Construction)
                • To Change a Reference's Logical Name or Description
                • Adjusting Reference Colors
                  • To Dim All Elements in a Reference
                  • To Make All Elements in a Reference the Same Color
                • Reference Transparency
                  • To Set Reference Transparency from the Transparency Dialog
                  • To Set Reference Transparency from the Adjust Colors Dialog
                • Reference (Display) Priority for 2D References
                  • To Set the (Display) Priority for References in a 2D Model
              • Identifying References
                • To Identify a Reference
              • Working with Nested References
                • Modifying Attributes of Nested References
                • Adjusting Nested References Colors
                • Controlling the Reference Color Table
              • Merging References into the Active Model
                • To Merge the Active Model and Attached References
                • To Merge an OpenPlant Modeler File into a Master File
                • To Merge into Master file in a Sheet View
              • References Tools for Drawing Creation
              • Reference Toolbox
              • Attach Reference
              • Set Reference Clip Boundary
              • Set Reference Clip Mask
              • Delete Reference Clip
              • Set Reference Back Clip Plane
              • Set Reference Front Clip Plane
              • Reload Reference
              • Move Reference
              • Copy References
              • Scale References
              • Rotate Reference
              • Mirror Reference
              • Copy Reference By Folding
              • Set Reference Presentation
              • Hidden Line Settings Dialog
                • Hidden Line Settings Dialog, General Tab
                • Hidden Line Settings Dialog, Hidden Tab
                • Hidden Line Settings Dialog, Visible Tab
              • Cached Visible Edges Settings Dialog
                • Cached Visible Edges Settings Dialog, General Tab
                • Cached Visible Edges Settings Dialog, Symbology Tab
              • Detach Reference
              • REFERENCE UPDATE
              • References Key-ins
                • References Key-in Format
                • Reference Settings Key-ins
                • Visible Edges Display Key-ins
                • Miscellaneous References Key-ins
                • Reinstating Level Display On and Off Settings After Switching References Outside the Product
            • Reference Configuration Variables
            • Raster Manager Overview
              • Using Raster Manager
                • Raster Manager Dialog
                  • Attach Raster Reference Dialog
                  • Save Raster As Dialog
                  • Raster Convert Dialog
                  • Raster Save As Settings Dialog
                  • Cache Manager Dialog
                  • Image Server Settings Dialog
                  • WMS Map Editor Dialog
                    • WMS Map Editor Dialog, Map Layers Section
                    • WMS Map Editor Dialog, Settings Tab
                      • Select Coordinate System Dialog
                    • WMS Map Editor Dialog, Preview Tab
                    • WMS Service Manager Dialog
                  • WMTS Attachments (Web Map Tile Service)
                    • WMTS Map Editor Dialog (Web Map Tile Service)
                      • WMTS Map Editor Dialog, Map Layers Section
                      • WMTS Map Editor Dialog, Settings Tab
                      • WMTS Map Editor Dialog, Preview Tab
                      • WMTS Service Manager Dialog
                  • Layer Display Dialog
                • To Show or Hide a Field in the Raster Manager Dialog
              • Printing Raster Images
              • Batch Raster File Conversion
                • Syntax for MSBatch Raster File Conversion
              • Supported Output File Formats
            • Raster Manager Tools
              • Raster Toolbox
              • Raster Display Toolbox
              • Bring to Front
                • To Bring a Raster Image to the Front of the Display
                • To Bring a Raster Image Forward One Position in the Display
              • Send to Back
                • To Send a Raster Image to the Back of the Display
                • To Send a Raster Image Back One Position in the Display
              • Fit to View
                • To Fit All Raster Images to a View(s)
                • To Fit Selected Raster Images to a View(s)
              • Actual Resolution (1:1)
                • To Fit a Raster Image to Its Actual Resolution
              • Contrast/Brightness
                • To Adjust the Contrast/Brightness Display of an Attached Raster File
              • Raster Control Toolbox
              • Attach
                • To Attach a Raster Reference
              • Raster Selection
                • To Select, Interactively, One or More Raster References
              • Transform Raster
                • To Move an Image
                • To Scale an Image
                • To Rotate an Image
              • Move Raster
                • To Move a Raster
              • Scale Raster
                • To Scale an Image Using Active Scale
                • To Scale an Image Using 3 Points Scale
              • Rotate Raster
                • To Rotate an Image to a Specified Angle
              • Mirror Raster
                • To Mirror an Image Using the Mirror Tool
                • To Reverse an Image Using a Mirror Creating a New Output Image
              • Raster Warp
                • To Warp a Raster Reference
              • Clip
                • To Crop a Raster Image Using an Element to Define the Boundary
                • To Crop a Raster Image Using a Fence to Define the Boundary
                • To Crop a Raster Image Using a Block to Define the Boundary
                • To Mask an Area of a Raster Image Using an Element to Define the Boundary
                • To Mask Part of a Raster Image Using a Fence to Define the Boundary
                • To Mask Part of a Raster Image Using a Block to Define the Boundary
              • Modify Clip
                • To Modify a Clipping Polygon
              • Unclip
                • To Delete All Clipping Polygons from a Raster Image
                • To Delete Selected Clipping Polygons from a Raster Image
            • Managing Raster Image Files
              • Raster Image Display
                • Attaching Raster Files
                  • To Attach a Raster Reference Based on the Image's Own Positioning Information
                  • To Attach a Raster Reference Interactively
                • Selecting Raster Files to Modify or Manipulate
                  • To Select One Image in a View
                  • To Select Additional Images in a View
                  • To Select One Raster Image from the List
                  • To Select Additional Raster Images from the List
                  • To Select Several Consecutive Raster Images from the List
                  • To Deselect Images
                  • To Deselect All Images in a View
                  • To Deselect All Raster Files from the List
                • Detaching Raster Files
                  • To Detach Selected Raster Files
                  • To Detach All Raster References
                • Image Server
                  • To Set a New Image Server
                  • To Attach a File from a Server
                • WMS Attachments
                  • To Create a New WMS Attachment
                  • To Attach an Existing WMS
                • ECWP Image Server
                  • To Attach a File from an ECWP Image Server
                • Bing Maps
                  • To Attach Bing Maps
              • Raster Attachment Options Dialog
              • Default Raster Attachment Options Dialog
              • Supported Image Input File Formats
                • Image Formats Supported in Read-Only Mode
              • Controlling the Display of Images in Views
                • To Change the Views in Which an Image Is Displayed
                • Changing the Display Order of Raster Image Files
                  • Using the Raster Manager Dialog?s Menus
                    • To Bring One or More Images to the Front in the List
                    • To Send One or More Images to the Back in the List
                    • To Bring One or More Images Forward One Place in the List
                    • To Send One or More Images Backward One Place in the List
                    • To Change the Display Order in the List Interactively
                  • Using the Raster Group of the Attach Tab in the Drawing Workflow
                    • To Bring One Image to the Front of the Display in a View
                    • To Bring Several Images to the Front of the Display in a View
                    • To Send One Image to the Back of the Display in a View
                    • To Send Several Images to the Back of the Display in a View
              • Fitting Images to a View
                • To Fit a Single Image to a View
                • To Fit All Images to a View
              • Displaying an Image at Full Resolution
                • To Display an Image at Its Full Resolution with the Actual Resolution (1:1) Tool
                • To Display an Image at Its Full Resolution from the Raster Manager Dialog
              • Changing the Display Characteristics of Raster Images
                • To Change the Contrast or Brightness of an Image
                • To Change the Display Gamma Setting for an Image(s)
              • Raster Images and DWG Workmode
                • Raster Manager and DWG Workmode
                • General Raster Features Disabled in DWG Workmode
                • File-type Dependant Raster Features Disabled in DWG Workmode
                • Supported Raster Image File Types in DWG Workmode
                • Troubleshooting Rasters and DWG Workmode
              • Raster Manager and Binary Workmode
              • Enhanced Dynamic Rubber Bands
            • Modifying Raster File Attachments
              • Clipping Raster Image Files
                • To Crop an Image Interactively
                • To Crop an Image Using an Existing Fence or Closed Element
                • To Mask Part of an Image Interactively
                • Modifying Clipping Polygons
                  • To Modify a Raster Clipping Polygon
                • Deleting Clipping Polygons
                  • To Delete Selected Clipping Polygons from a Raster Image
              • Moving, Warping, and Resizing Image Files
                • Using the Transform Tool
                  • To Rotate an Image Interactively
                  • To Scale an Image Interactively
                  • To Move an Image Interactively
                • Using the Warp Tool
                  • To Match an Image Feature to a Design File Element
              • Image Draping
                • Draping and Rendering
                • 3D Surfaces and Raster Manager
                • Integration with Rendered Objects
                • Draping Supported in Some Products
                • Associating an Image to a 3D Surface
                  • Overview of a Draping Process
              • Reprojecting Images
                • Reprojection Workflow
                  • Rasters Attached in a Model in a Reference
                  • Rasters Attached in the Master Model
                • Changing the Geographic Coordinate System of the DGN
                • Copy and Paste a Raster (including Merge to Master)
                • Applying a GCS to a Raster (Resampling)
                • Editing Tools and Reprojected Rasters
            • Raster Configuration Variables
            • Using Point Clouds
              • Point Cloud Toolbox
                • Point Clouds Dialog
                • Convert Dialog
              • Attaching Point Cloud Data
                • Attach Point Cloud
                  • To Attach a Point Cloud
                  • To Convert a Point Cloud File
                  • To Batch Convert Multiple Point Cloud Files to a Single POD File
                  • To Batch Convert Multiple Point Cloud Files to Individual POD Files
                • Detach Point Cloud
                  • To Detach a Point Cloud
                  • To Detach a Point Cloud from the Point Clouds Dialog
              • Modifying Point Cloud Data
                • Clip Point Cloud
                  • To Apply a Clip to a Point Cloud Using a Block
                  • To Apply a Clip to a Point Cloud by Boundary
                  • To Apply a Clip to a Point Cloud by Mask
                • Delete Point Cloud Clip
                  • To Delete a Clip from a Point Cloud
              • Displaying the Point Cloud Data
                • Point Cloud Styles
                • To Filter the Point Cloud by Classification
                • To Colorize Points by Elevation
                • To Display Point Cloud Data by Intensity
              • Reviewing Point Cloud Data
                • To Visually Inspect the Point Cloud
                • To Change the Size of the Points in a Point Cloud
                • To Measure Distance in a Point Cloud
              • Referencing a Point Cloud
              • Printing a Point Cloud
                • To Print a Point Cloud
            • Reality Mesh Files Support
              • Attach Reality Mesh
                • To Attach a Reality Mesh
                • Scalable Mesh File Support
                • Reality Management Browser
                  • Reality Management Dialog
              • Remove Reality Mesh Clipping
              • Reality Mesh Attachments Dialog
              • (Technology Preview) 3SM Clip Tool
                • (Technology Preview) To clip or mask the reality mesh using different methods
              • Reality Model Classification
                • Working with Reality Model Classifiers
                • Attach Classifier to Reality Mesh
                  • To Attach Classification to a Reality Mesh
            • Feature Info dialog
          • References
          • References Dialog
            • Reload Reference
          • Display of Rendered Views
          • View Attributes Dialog
            • View Attributes Dialog, Presentation Section
            • View Attributes Dialog, View Setup Section
            • View Attributes Dialog, Point Cloud Styles Section
            • View Attributes Dialog, Clip Volume Section
            • View Attributes Dialog, View Seed Options Section
            • View Attributes Dialog, Background Map Section
          • References
          • External Database Interface
            • Managing Non-Graphical Data
              • Associating Elements to Non-Graphical Data
              • Tag to Database Converter
              • What Is the Database Interface?
              • Why Use the Database Interface?
              • What Is a Relational Database?
              • Why Use a Relational Database?
              • Database Server
                • Supported Database
              • Selection Factors
              • Database Product Families
                • Oracle
                  • Oracle Product Descriptions
                • ODBC Database Interface
                • OLE DB Database Interface
                  • Using Oracle Data Provider (ODP) With OLEDB and BUDBC Connections
            • Connecting to Databases
              • Setting Up the Database Interface
                • Connecting to ODBC
                  • To Set Up the ODBC Interface
                  • To Connect to an ODBC Database from the Connect to Database Dialog
                  • To Connect to an ODBC Database from the Product Properties Dialog
                • Connecting to Oracle
                  • Setting Up Oracle
                  • To Set Up the GIS Example Database
                  • To Connect to an Oracle Database from the Connect to Database Dialog
                  • To Connect to an Oracle Database from the Product Properties Dialog
                  • Windows Notes
                • Connecting to an OLE DB Data Source
                  • Setting Up OLE DB
                  • To Create a UDL File in Windows
                  • To Create a UDL File in OpenTunnel Designer
                  • To Edit a UDL File
                  • To Connect to an Existing OLE DB Data Source
                • Connecting to BUDBC
                  • To Connect to a BUDBC Database
                • MS_LINKTYPE
                  • OLEDB Configuration Variables
                  • Copying Elements with Attached Linkages
              • Database Configuration Variables
              • Troubleshooting Database Connections
              • Connect to Database Dialog
              • Key-in to Disconnect a Database
            • Linking Database Rows to Elements
              • Database Tools Available in OpenTunnel Designer
              • Visual SQL Query Builder
                • Visual SQL Query Builder Dialog Overview
                • Building Simple SELECT Statements
                  • To Use the Visual SQL Query Builder to Build a Query: Example 1
                  • To Use the Visual SQL Query Builder to Build a Query: Example 2
                  • Joining Tables
                    • To Use the Visual SQL Query Builder to Build a Query: Example 3
                    • To Use the Visual SQL Query Builder to Build a Query: Example 4
                • Creating Linkages Using the Visual SQL Query Builder
                  • To Link a Database Row to a Graphic Element
                • Reviewing Database Attributes
                • Database Form Dialogs
                  • To Create a New Form Dialog Containing All Items
                  • To Perform a Review from a Form Dialog
                  • Locating Linked Elements
                    • To Display the Design Element Linked to One of the Records
                  • Opening, Editing, and Saving Form Dialogs
                    • To Save or Customize the Form Generated from the Visual SQL Query Builder
                    • To Open a Saved Form
                    • To Open a Saved Form by Using a Key-in
              • Using SQL
                • Opening and Saving Query Statements
                  • To Open a Query Statement
                  • To Save a Query Statement
                • SQL Statements
                  • SELECT SQL Statement
                  • UPDATE SQL Statement
                  • DELETE SQL Statement
                  • INSERT SQL Statement
                  • CREATE TABLE SQL Statement
                  • DROP SQL Statement
                  • COMMIT SQL Statement
                  • ROLLBACK SQL Statement
                • Specific SQL Window Key-ins
                • Using the SQL Window
                  • To Open the SQL Window
                  • To Submit a SQL Statement
                • Command Files
                  • To Create a Command File
                  • To Submit a SQL Statement Stored in a Command File
                  • Alternative Method to Submit a SQL Statement Stored in a Command File
                • Manually Committing SQL Statements
                  • To Activate the Mode in which OpenTunnel Designer Does Not Automatically Commit SQL Statements
                  • To Explicitly Request OpenTunnel Designer to Commit Statements When AUTOCOMMIT Is Set to OFF
                  • To Undo (Negate) the Effect of All Statements to the Last Commit Point
                  • To Reactivate the Default Mode
              • Creating Tables
                • To Create a Table
                • To Add a Table to the MSCATALOG
              • MSCATALOG Table
                • MSCATALOG Structure
                • Creating and Maintaining MSCATALOG
                  • To Create the MSCATALOG Table
                  • To Create an Attribute Table in the Database
                  • To Add a Table to the MSCATALOG Table
                  • To Delete a Table from the MSCATALOG Table
                  • To Drop a Table from the Database
                  • Database Setup (MSCATALOG) Dialog
                    • Add Table Dialog
              • Database Tools
              • Creating Linkages
                • To Create Linkages
                • Defining the Active Entity
                  • To Define the Active Entity Graphically by Using the Database Tool
                  • To Directly Define the Active Entity by Key-in
                  • To Define an Active Entity from a Seed Row
                  • Editing the Active Entity
                    • To Edit the Active Entity by Using an SQL UPDATE Command
                • Setting Linkage Mode
                  • To Set Linkage Mode
                • Attaching Linkages to Cell Libraries
                • Database Dialog
            • Querying and Maintaining the Database
              • Reviewing Attributes
                • To Change the Selection Criteria
                • To Check the Selection Criteria for All Tables (SQLREVIEW Values for All Tables in MSCATALOG)
                • Visual SQL Query Builder Dialog
                  • Visual SQL Query Builder Dialog, Select Tab
                  • Visual SQL Query Builder Dialog, Where Tab
                  • Visual SQL Query Builder Dialog, GroupBy Tab
                  • Visual SQL Query Builder Dialog, OrderBy Tab
                  • Select Table Dialog
                  • Form Dialog
                  • Visual SQL Data Browser Dialog
              • Displaying Database Attributes in the DGN File
                • Displaying Attributes
                • To Create a Displayable Attribute Type
                • To Modify a Displayable Attribute Type
              • Detaching Linkages
              • Verifying Linkages
                • Verify Linkages Dialog
                  • Verify Linkages Dialog Icons
            • Generating Reports
              • Report Tables
                • To Generate Report Tables
                • To Check the Report Table Names for All Tables Listed in MSCATALOG
                • To Change a Report Table Name Specification
              • Fence Filters
                • To Discard Previously Defined Fence Filter Specifications and Disable Fence Filter Selection
                • To Define a Fence Filter and Enable Fence Filter Selection
                • To Highlight Elements in a Fence Using a VBA Macro
              • Report Formatting and Output
            • Change Element Attributes
              • To Change an Element's Attributes (Those That Are Set to On)
              • To Match the Active Attributes to an Element and Use These Settings to Change the Attributes of Other Elements
              • To Change the Attributes of One Element to Match Those of Another, Without Affecting the Active Attributes
            • Database Interface Reference
              • Database Toolbox
                • Connect to Database Tool
                • Open Verify Linkages Tool
                • Open Visual Query Builder Tool
                • Attach Active Entity Tool
                  • To Attach the Active Entity to an Element
                • Show Linkage Mode
                  • To Display the Linkage Mode
                • Show Active Entity Tool
                  • To Display the Active Entity
                • Define Active Entity Graphically Tool
                  • To Set a Database Row as the Active Entity
                • VSQL Review Database Attributes of Element
                  • To Review a VSQL Database Record
                • Review Database Attributes of Element Tool
                  • To Review the Database Attributes of an Element
                • Detach Database Linkage
                  • To Detach Database Rows from an Element
                • Attach Displayable Attributes Tool
                  • To Designate a Displayable Attribute Text Node
                • Load Displayable Attributes Tool
                  • To Load a Displayable Attribute Text Node
                  • To Load a Displayable Attribute on Use Fence Mode
                • Generate Report Table Tool
                  • To Generate a Report Table
              • ACTIVE DATABASE (DB=)
                • To Connect OpenTunnel Designer to an Oracle Database
                • To Connect OpenTunnel Designer to ODBC
                • To Check the Name of the Database to Which OpenTunnel Designer is Connected
              • ACTIVE ENTITY (AE=)
                • To Define the Active Entity
              • ACTIVE REPORT (RS=)
                • To Name a Report Table
                • To Display the Active Report Table Names in the SQL Window
              • ACTIVE REVIEW (RA=)
                • To Select Which Row Can Be Reviewed
                • To Display the Active Review SELECT Statements in the SQL Window
              • DEFINE SEARCH (DS=)
                • To Specify and Activate a Fence Filter
                • To Display the Current Fence Filters in the SQL Window
                • To Disable All Fence Filters
              • EDIT AE
                • To Edit the Active Entity
              • FIND (FI=)
                • To Select a Row and Set It as the Active Entity
              • SESSION AUTOCOMMIT [OFF|ON]
              • SESSION DEBUG [OFF|ON]
                • List Database Transaction Details
                • To Discontinue the Transaction Log
              • SET DATABASE
                • To Review and Modify the MSCATALOG Table
              • SQL
              • SQL Window
              • Cell Link
                • To Attach a Linkage to a Cell(s)
                • To Detach Linkages from a Cell(s)
              • Cell Link Dialog
        • Analyze
          • Measure Toolbox
            • Measure Distance
              • To Measure the Linear Distance Between Two Data Points
              • To Measure the Distance Along an Element
              • To Measure Perpendicular Distance from an Element
              • To Measure Perpendicular Distance from a Segment of an Element
              • To Measure the Minimum Distance Between Elements
              • To Measure the Maximum Distance Between Elements
              • To Measure the Minimum Distance to a Surface (3D Only)
              • To Measure Elements in a Reference Considering the Reference Scale
            • Measure Radius
              • To Measure an Element's Radius
            • Measure Angle Between Lines
              • To Measure the Angle Between Two Lines
            • Measure Length
              • To Measure the Length of an Element(s)
            • Measure Area
              • To Measure the Area and Perimeter of One Element
              • To Measure the Area Defined by a Fence
              • To Measure the Area of the Intersection or Union of Closed Elements
              • To Measure the Area of the Difference Between Elements
              • To Measure the Area of Touching Elements or Whose Endpoints Are Within the Maximum Gap
              • To Measure an Area Defined by Data Points
            • Measure Volume
              • To Measure Volume
          • Design Review
            • Using Redline Files
              • To Enable or Disable the Display of an Attached Redline File
              • Redline Toolbox
                • Redline Display
              • Display Redline Files Dialog
              • Redline Off
                • To Detach All Attached Redline Files
            • Annotate Toolbox
              • Place Flag
                • To Place a Flag
              • Show/Edit Flag
                • To Display or Edit a Flag's Explanatory Message from Selected Flag
              • Update Flags
                • To Update a Flag's Display Image
            • Marking Up a Design
              • Managing Markups
                • To Preview a Markup
                • To Print a Markup to PDF
                • To Print Multiple Markups to One PDF
                • To Delete a Markup
                • To Rename a Markup
                • To Change the Properties of a Markup
                • To Set the Priority of the Markup
                • To Set the Status of the Markup
              • Adding Comments
                • To Manually Add a Comment
              • Using Named Expressions to Name Markups
                • To Customize the Delivered Example Markup Names
                • To Create and Define a New Markup Named Expression
              • Markup Configuration Variables
              • Annotating Markups
                • To Place Markup Text
                • To Redline the Markup Model
              • Markups Dialog
              • Markup Settings Dialog
              • Markup Toolbox
              • Mini Toolbar for Markups
          • Ensuring Standards Compliance
            • Introduction to the Standards Checker
            • Using the Standards Checker
              • Defining Standards Checker Settings
                • To Create Standards Check Settings
                • Standards Checker Configuration Variables
              • Running the Standards Checker Interactively
                • Running an Interactive Standards Check
              • Generating Standards Checker Reports
                • Generating a Standards Check Report
              • Reporting Template Standards Checks in Named Groups
                • To Check Element Templates and Send Results to a Named Group
              • Running Standards Checks on an Individual File
                • To Set Up and Run a Standards Check on an Individual File
              • Running Standards Checks as a Batch Process
                • To Set Up and Run a Standards Check as a Batch Process
                • Syntax for Running Standards Checks in the Batch Process Utility
              • Standards Checker Dialog
              • Standards Checker Settings Dialog
              • Level Checker Settings Dialog
              • Text Style Checker Settings Dialog
              • Dimension Style Checker Settings Dialog
              • Element Template Checker Settings Dialog
              • Line Style Checker Settings Dialog
          • Design File Cleanup
            • To Select Duplicate Elements
            • To Automatically Delete Duplicate Elements
            • To Select or Flag Overlapping Elements
            • To Interactively Examine Overlapping Elements
            • To Select or Flag Gaps Between Elements
            • To Interactively Examine Gaps Between Elements
            • Design File Cleanup Dialog
              • Design File Cleanup Dialog, General Tab
              • Design File Cleanup Dialog, Duplicates Tab
              • Design File Cleanup Dialog, Overlaps Tab
              • Design File Cleanup Dialog, Gaps Tab
          • Reports Dialog
            • Summarize, Groups and Aggregates
              • To Group Columns and Aggregate Column Information
              • To Summarize Information in Report Columns
          • Condition Editor Dialog
            • To Add Conditions to a Display Rule
          • iTwin Design Review Dialog
        • Curves
        • Constraints Tab
        • Utilities Tab
        • Drawing Aids
        • Content
        • Collaborate
        • Help
      • General Workflow
      • Modeling Workflow
        • Home Tabs
        • View
        • Curves
        • Solids
        • Surfaces
        • Mesh
        • Content
        • Analyze
        • Constraints
        • Utilities
        • Drawing Aids
        • Collaborate
        • Help
      • Visualization
        • Home Tab
        • View Tab
        • Animate Tab
        • Drawing Aids
        • Collaborate
        • Help
      • Task Navigation Workflow
        • V8i Task Theme in OpenTunnel Designer
          • To Activate the V8i Task Theme in OpenTunnel Designer CONNECT
      • 2D Sketcher Workflow
        • Profile Tools
          • Tunnel Catalog/Tunnel Templates
          • Portal Catalog/Portal Templates
          • Excavation Subspaces Catalog/Excavation Subspaces Templates
          • Reinforcement Catalog/Reinforcement Templates
          • Jet Grouting - Crown&Floor
          • Forepoles - Circle and Region
          • Fiber Glass and Rock Bolts
          • Auxiliaries Catalog/Auxiliaries Templates
      • Geotechnical Extension
    • Projects
      • To Create a New WorkSpace
      • To Create a New WorkSet
      • To Create a WorkSet from a Template WorkSet
      • ProjectWise Project Association
        • To Assign a ProjectWise Project to a WorkSet
        • Register a ProjectWise Project
      • To create a new project
      • To Add a Tunnel Corridor
      • To Add a Multi Units
      • To Add a Tunnel Unit
      • Civil Elements
        • To Import Civil Geometry
        • To Create Transverse Alignment
        • To Import Soil Meshes
        • To reference civil data
        • To Assign Soil Properties to Imported Meshes
        • To Set the Active Terrain
      • Templates
        • To Create a New Template
        • Template Drawing Rules
        • Tunnel Geometry
        • Geometry Constraints
        • Tunnel Lining
      • To Move a Tunnel Corridor to a New Station
    • Modeling
      • ReferenceLines
        • To Place Referenceline by Midpoint
        • To Place a Parallel Referenceline
        • To Place a Multiple Referencelines
        • To Move a Referenceline
        • To Modify a Referenceline
      • Conventional Tunnels Modeling
        • Tunnel Transition
      • Mechanized (TBM) Tunnels Modeling
        • TBM UTR (Universal Tapered Ring)
        • TBM UTR As Built (Universal Tapered Ring As Built)
      • Tunnel Intersection
        • Erase Tunnel Intersections
      • Tunnel Trim
        • Erase Tunnel Trims
      • Excavation Subspaces Modeling
      • Reinforcement Modeling
        • How to Define Shotcrete as Permanent/Temporary Walls
        • How to Define Jet Grouting
        • How to Define Forepoles
        • How to Define Fiber Glass
        • How to Define Rock Bolts
        • How to Define Piles
        • How to Define Steel Arches
        • How to Place Excavation Subspaces and Reinforcement
      • Construction Scheduler
      • Auxiliary Modeling
        • How to Define Auxiliaries
        • How to Place Auxiliaries
          • Place by Extrusion
          • Place by Path
          • Place by Station
      • Singularities Modeling
        • How to Define Portals
        • How to Define Shafts
        • How to Define Rooms
        • How to Define Custom Complex Singularities Shapes
        • How to Place Portals
        • How to Place Shafts
        • How to Place Rooms
      • Using Clash Detection
        • Calculating Clashes
        • To set up a clash detection job
        • To select criteria for clash detection operation
        • To run a self check clash detection
        • To set up suppression rules
        • To execute the clash detection
        • To review the clash results
        • To group clash results
        • To export clash results to a spreadsheet
        • To export clash results to a GPX File
        • To share clash detection jobs and rules
    • Interoperability
      • Assumptions and Limitations When Exporting to PLAXIS
      • PLAXIS Transfer
        • To Send to PLAXIS 2D
        • To Send to PLAXIS 3D
    • Reports
      • To Generate an Input Echo Report
      • To Generate a Quantities Report
      • To Generate TBM UTR Reports
      • To Generate TBM UTR As Built Reports
      • To Generate Construction Scheduler Report
    • TBM UTR Drawings
      • Settings
      • UTR Unfolded View
      • UTR Ring Positions
    • OpenRoads Designer
    • MicroStation
    • ProStructures
    • Tutorials
    • OpenTunnel Designer Readme
      • Before You Begin
      • What's New
      • General Info
      • Installation
        • Installation Requirements
        • System Requirements
        • QuickInstall Guide
          • Before You Start
          • Configuration Changes
            • The ConfigurationSetup.cfg Configuration File
            • The WorkSpaceSetup.cfg Configuration File
          • Installing OpenTunnel Designer from CONNECTION Client
          • To Install OpenTunnel Designer
          • Redirecting the Package Cache
          • Log Files
          • Command Line Options
          • To Make Changes to the Installed OpenTunnel Designer
          • To Repair OpenTunnel Designer
        • Deployment Guide
          • Deployment Settings
          • To Create a Deployment Image
          • To Install the Application Using the Deployment Image
        • Activating Your Product
      • Legal
        • Trademark Notice
        • Copyright Notice
      • Bentley Information
        • Support Path
        • Bentley Headquarters
      • Links
      • Security Release Notes
  1. OpenTunnel Designer Help
  2. OpenTunnel Designer Workflows
  3. Drawing Workflow
  4. Attach Tab
  5. External Database Interface
  6. Database Interface Reference
  7. ACTIVE ENTITY (AE=)

ACTIVE ENTITY (AE=)

Used to define the Active Entity without specifying an existing row.

  • To Define the Active Entity