| Height |
Specifies the height of the form, unless a shape or form above prohibits extrusion. If a shape above only partially blocks extrusion, Height controls the portion of the form that can be extruded past the overlying shape or form. Enabled when the option is selected. Note: Height extrusion direction is defined by either the Z-axis, perpendicular to the view; or, if AccuDraw is on, by the AccuDraw Z-axis.
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| Width |
Specifies the width of the form. |
| Placement icon |
Controls the position of the form relative to the placement points which define the start and end points of the form:
 Places the form to the left of the creation line (baseline).  Places the form centered on the creation line.  Places the form to the right of the creation line.
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| Method |
Controls what the new placed form is parallel to:
- Forms — The new linear form is placed between Building forms.
- 2 Imaginary Lines — The new linear form is placed between imaginary lines.
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| Top |
Controls the geometry and location of the top of a form:
- Fixed Height — The form has a uniform height as specified in the Height field. The top face of the form is parallel to the bottom face.
- Connect Shapes — The form is extruded so that it connects to one or more shapes and/or forms. Selecting Connect Shapes displays the Delete Construction check box, which enables or disables the deletion of the limiting shapes and/or forms.
- Connect 3 pts — The top of the form is located in an imaginary plane defined by three data points.
- Connect 2 pts/View — The top of the form is located in an imaginary plane constructed through two data points and perpendicular to the view where the last data point is entered.
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| Delete Constructions |
Enabled when the option is selected, limiting shapes and forms are deleted when on. |
| 3D Dynamics |
During placement, controls whether the display of the form being placed dynamically displays in 3D or in 2D: If on, forms being placed dynamically display in 3D.
If off, forms being placed display in 2D.
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| Roof Tolerance |
Enabled when the option is selected, a curved connecting shape is stroked using the specified tolerance before it is used to create a roof on the form when on. The curved shape is used to create a feature on the form that is the exact shape of the curve when off. |
Creates a form that is placed perpendicular to an existing form or an imaginary line. 
