Video Exlanation About The Way Of Use Alias Commands.
Command aliases are shortcuts or alternative names for commands that you enter at the keyboard. The “acad.pgp” file lists the command aliases. You can change or delete these aliases, or you can add some of your own by editing the acad.pgp file. To access the acad.pgp file, on the Tools menu, click Customize, then Edit Custom Files, and then Program Parameters (acad.pgp).
The acad.pgp file also defines aliases for external commands for Windows® and DOS, which are not listed here.
The real professional work with these commands and do their work with 30-40% most effective and of course they save a lot of time to make their drawings correct and with perfect quality.
Take a look at this video and lear how to work with Alias Commands In Autocad: