| BLIPMODE | Controls the display of marker blips |
| DDRMODES | Sets drawing aids |
| REDRAW | Refreshes the display of the current viewport |
| REGEN | Regenerates the drawing and refreshes all viewports |
| BLIPMODE | Controls whether marker blips are visible |
| VSMAX | Stores the upper-right corner of the current viewport virtual screen |
| VSMIN | Stores the lower-left corner of the current viewport virtual screen |