PICKADD system variable
Pick add
Controls how the Shift key selects entities.
| Type: | Boolean | 
| Saved in: | Registry | 
| Range: | 0 to 1 | 
| Default value: | On | 
| Possible values: | Off (0): Press SHIFT to add entities to the current selection On (1): Press SHIFT to remove entities to the current selection | 

