This post is for those new to using cad or the vertical products based on the AutoCAD platform. One of the best things you can do to speed up your work is to learn/understand how the command aliases (aka shortcut keys) work and how you can add/edit your own. This will allow you to modify the key combination used to invoke a command or external program.
The command aliases are stored in a file called "acad.pgp". For those using ADT the default path is found in the following location: C:\Documents and Settings\username
If you are unsure of which acad.pgp file your cad session is using you can always type the following:
Once typed this will return a path to where the command aliases are stored. Of course this only returns the path, if you wish to open the file try the following:
(startapp "notepad" (findfile "acad.pgp"))
Once you make a change you will need to either use the "reinit" command to reinitialize the pgp file or close your cad session and reopen.
The AutoCAD platform uses the first "acad.pgp" file it finds from the Options>>Support File Search Path to load into memory.