• Show Reference Hierarchy:
  
  
  

  If the active design is selected in the Hierarchy pane:	Only rasters attached to the active design are listed in the Image List box.
  If a referenced DGN is selected in the Hierarchy pane:	Only the rasters attached to that DGN are listed in the right pane.

• Flat Mode:
  
  
  

  Active design is selected in the Hierarchy pane:	All rasters attached to the active design and its Nested References (with respect to the Nesting Depth) are listed in the right pane.
  A referenced DGN is selected in the Hierarchy pane:	All rasters attached to that DGN and its Nested References are listed (With Respect to the Nesting Depth) in the right pane.

• Reload Reference: Reread and reload a raster reference.

• Raster Selection: Select one or more raster images in a view(s).

• Fit to View: Fit selected raster(s), or all rasters, to a view.

• Actual Resolution 1:1: Fit a raster to its Actual Resolution (1:1).

You can change the display sequence by dragging a file to a different position in the list. The display sequence of the raster images follow these rules:

• Raster images cannot be separated from the other images of the same design file.
• The display order of raster images that are attached through a model in reference is inherent to this model. When the referenced model is reloaded, the display order of the raster images will be updated.
• Only images from the active model can be moved with the "Bring Forward", "Send Backward", "Bring To Front" and "Send To Back" tools. Again, the images cannot be moved outside the range of the active model's image list. These tools will be grayed out if an image that is not in the active model is selected.
• If a model is self-referenced, changing the display order in the active model will also change the order of the images in the referenced model.

Resizing the dialog changes the size of this list box, letting you display as many image filenames as you require. When the number of files in the list exceeds the number of lines displayed, a scroll bar lets you scroll through the list.

One or more files can be selected from the list. When more than one file is selected, the information provided by the text fields, in the lower part of the dialog, applies to the first file of the list.

Double-clicking a filename opens the Properties dialog.

When right-clicking on multi-page rasters, the "Change Page" menu item is added to the contextual menu. Use to change the page of a multi-page raster attachment.

• Plane — Determines in which plane the raster will display. This is a per raster setting. It is also possible to display a raster as a vector element between vector elements , following the vectors display rules. Therefore, for each raster, users have the option of displaying it in the Background Plane, Design Plane or Foreground Plane. This generates three separate groups of rasters. The tools that modify the display order (bring to front, send to back, bring forward and send backward) are restricted to work inside a single group of the active design. Use this field to select in which plane (Background, Design or Foreground) the rasters are displayed. It is possible to change this information when using a multiple selection. When a multiple selection is used, the value of the first raster of the list is displayed in the edit dialog. By default this column is the first to the left and it is turned on.
  
  
  
• Quick Info — The Quick Info field displays an icon. When the cursor is placed over this field, a bubble appears with a short description of the raster. The following fields are displayed in the bubble: Full Path, Origin, Width, Height, Dimensions, Pixel Size, Scale Factor, Rotation and Affinity. This field is read-only.
  
  
  
  • Full Path — Displays the full file specification, including the directory where the reference was found.
  • Origin — Displays the X, Y and Z coordinates of the lower left corner of the image, in working units.
  • Width/Height — Displays the Width and Height of the image in working units.

  • Dimensions — Displays the dimensions of the raster image, in pixels, plus the color depth.

  • Pixe Size — Displays the size of each pixel of the image, in working units.
  • Scale Factor — Displays the scale as 1:n and the resolution in dpi.
  • Color Mode — Change the color depth of the image.
  • Rotation — Sets the rotation angle of the image.
  • Affinity — Sets the skew angle of the image.
• File Name — Displays the file name.
• Description — Displays a description of the raster.
• Logical Name — Displays the logical name of the raster.
• Read-Only — If on, the file is opened in a read-only mode and a check mark will appear in the Read-Only column.
  
  
  
• Inherit GeoCS from Model — If the attachment does not have a coordinate system, or if the coordinate system is deleted, the Inherit GeoCS from Model is set to on and cannot be changed. If a coordinate system is assigned to an attachment, the Inherit GeoCS from Model is set to OFF, but in this case, it can be turned on. If the Inherit GeoCS from Model is set to on, then the coordinate system assigned to the raster is not being used. In this case, the coordinate system displays in red in the Raster Manager dialog and (Unused) is written beside the coordinate system name in the Properties dialog. This toggle cannot be overridden.
  
  
  
• Draping — Indicates if Draping is enabled. When dcdrape.pal is added to a material table (.mat) which is attached to a DGN file, the draping is preserved and can be viewed directly in the application and rendered by the rendering engine when this field is toggled ON.
  
  
  
• Security — Attachments with this column checked are password protected and will not display. They will have the same behavior as attachments with the “File not found” status. Clicking the column opens a dialog to enter the password for the selected file(s). Multiple selections are supported to enter the password.
  
  
  
• Level — Shows which level the raster is on. Double-clicking the column displays a drop-down list box that lets you change the level for the selected raster.
  
  
  
• Display Priority — This column allows you to select the display priority. This column displays a valid priority value only if the Design Plane is selected for this raster. If another plane is selected, it is displayed “--”. A level value is automatically assigned to all newly attached raster. The raster is treated as a standard element and follows the rules that come with being on a level. This includes display, Freeze, Lock, Plot and Viewport Freeze operations. For 2D rasters, the display priority manages the display order of DGNs. For 3D rasters, the Z elevation manages the display order of DGNs.
  
  
  
• Geo Priority — The Geo Priority field displays the method used to geographically position the image. The available methods are Attachment, Raster Header, Sister File and From Preferences. The image may have native geographic metadata stored in the image itself (raster header) or in a companion file (sister file or world file). When no native methods are present, the image is geographically positioned by the user and the metadata is stored in the design file. This method is called "attachment". The geographic metadata is always preserved and updated in the Attachment. When specified otherwise, the alternate location is updated as well as the attachment. Hence, the attachment is constantly updated to reflect the current geographic information of the image. In cases where the image has native geographic metadata, once attached to a design file, it is sometimes useful to specify which metadata storage to use such as Raster Header, Attachment or Sister File. The Raster Manager preferences allow some flexibility to that effect. The Geo Priority column displays the method used to position the image and, upon reopening the design file, will display in RED if the previous method cannot be used. For example, you may want to attach an image using a sister file, but once attached you want the geographic metadata to be read from the attachment. You would then set the preferences to prioritize native geographic metadata and would change the Geo Priority to attachment. The Geo Priority is also very useful to warn about potential data loss. For example, if the preferences are set to always read the geographic metadata from a sister file but the sister file is not present, Raster Manager will use the Attachment information and will highlight the column in red showing an error has occurred. The status column will also display the alternate method used to geographically position the image, in this case "attachment".The Geo Priority feature allows each image to have its own Geo Priority. In versions before 2004 Edition, the same Geo Priority was forced to all images. When an older file version is opened and where no Geo Priority was previously set, the Geo Priority will be set to From Preferences. This indicates that the Raster Manager preferences will dictate how Georeference for this image is handled. If the Raster Manager Preferences are set identically to the previous version, the image will display and position identically. If the Preferences are set differently, it is possible that the image displays and positions differently. If this is the case, adjust the Geo Priority before saving and closing the design file and change the Raster Manager Preferences accordingly. To change the Geo Priority, simply click in the Geo Priority column to open the Geo Priority dialog. You can then change the selection.
• Coordinate System — This column displays the Coordinate System, for an image, that will be used for a transformation operation such as On-the-Fly or Fence Transform. The Coordinate Systems assigned to an image can be issued from the Design File or the Image Header. If the image does not have an associated Coordinate System, the field displays Inherited from DGN. This indicates that when a transformation operation will be executed, the image will be assigned to the same Coordinate System assigned to the design file it is attached to. When the image has an associated Coordinate System, the column displays an abbreviation of the Coordinate System name. To read detailed information about the Coordinate System, simply move the cursor over the column to display a tooltip information box. To open the Coordinate System dialog, simply double-click on the column. Unless Bentley Descartes is loaded, this dialog displays in read-only mode and all the fields are grayed out.
• Model — The Model field is used to display the origin (design name and model name) of the raster reference.
• Display Gamma — Sets the display gamma correction value. The base value is 1.0. A value lower than 1.0 creates a darker image, a value higher than 1.0 creates a lighter image.
• Print Gamma — Sets the gamma correction value for the printer.
• Status — The Status field displays the reference's status (Loaded, Referenced, Self-Referenced or Raster Not Found). When a file is not found, its name is displayed in red, with the message "Raster not found" appearing in the Status field.

For monochrome images, the Background Color setting is used to set the background color of the raster file.

The chosen transparency color also is used as a fill color when clipping raster images.

Performs a similar function as the Actual Resolution (1:1) tool, which lets you select interactively the raster image to fit.

All the annotation bullets are displayed even if the "Show" toggle is off. Move the cursor of the Explore Annotation tool over the selection region of an annotation, the selection region is highlighted. The annotation content is only visible when a data point is entered into the annotation selection region.