Columns may be placed at a junction of three or more grid lines. You define the Column Location Marks in the Instance Properties of the column, located under Constraints. The drop-down lists the possible marks for the column.
| Column Instance | Possible Column Location Marks |
|---|---|
 |
E-4 E-5 E-F F-4 F-5 4-5 |
 |
E-4 E-5 F-5 4-5 |
 |
E-4 E-5 F-5 |