(8 may 2003)
| Prefix | What it does |
| ‘ | (quote mark) Transparency prefix – allows a command to be executed inside another command. Eg ‘ZOOM |
| – | (dash) Command line prefix – invokes a non-dialog version of a command. Eg -LAYER |
| _ | (underscore) Non-localised command prefix – original English command names in a localised version of AutoCAD. Eg _LINE |
| . | (period) Non-redefined command prefix – of commands that have been messed with by a third party, like PLOT or commands that have been undefined using the UNDEFINE command. |
| + | (plus) Dialog tab prefix – for selecting a particular dialog tab. Eg ‘._+DSETTINGS |