RELATE BY "uses" LENGTH 4096 ASGRID COUNT_FIXED BROWSER { SHOW } }
In the example above, an association between classes has a row in the grid for each class that the association attaches to (normally two, but can be three or more if additional classes are attached to the association line – this behavior is hard-coded in the software). Because of the COUNT_FIXED keyword, users cannot add to or delete rows in the grid.
Contrast this with other grids, for example the Use Case Step grid, wherein users may add new steps or delete steps from the grid.