Use this procedure to define mullions that are offset from the start or end of the door/window assembly to lengthen or shorten the edge or offset in the X or Y direction to shift the edge. For example, you might want to represent butt glazing by offsetting the mullions to be behind glass panel infills.
| Offset | Description |
|---|---|
| X | For vertical mullions, a positive X offset moves the mullions toward the end of the door/window assembly, while a negative X offset moves the mullions toward the start of the door/window assembly. For horizontal mullions, a positive X offset moves the mullions toward the top of the door/window assembly, while a negative X offset moves the mullions toward the bottom of the door/window assembly. |
| Y | In Plan view, a positive Y offset moves the mullions above the baseline, while a negative Y offset moves the mullions below the baseline. |
| Start | Negative Start offset lengthens the mullions beyond the start point, while a positive Start offset shortens the mullions. |
| End | Negative End offset lengthens the mullions beyond the end point, while a positive End offset shortens the mullions. |
Tip: To quickly identify the start and end of a door/window assembly, select the door/window assembly. The Reverse Direction grip is displayed near the center of the door/window assembly and points toward the end of the door/window assembly.
- Click
. 
- Expand Architectural Objects Door/Window Assembly Styles. Note: Alternatively, select a door/window assembly in the drawing, and click .
- Select a door/window assembly style.
- Click the Design Rules tab.
- In the left pane, select Mullions under Element Definitions.
- Select a mullion definition or click
to create a new one. - Specify an offset distance for the X, Y, Start, or End.
- Click OK.