You can create your own commands by using the "alias" command.
For example, you want to launch a TV recording program remotely. Firt add a new command:
(/action: [a]dd, [r]emove or [l]ist aliases. Here we're adding a new alias, named "tv")
Now you have you own "tv" command!
You can also specify arguments to the program launched:
Now, by typing "ie", Internet Explorer will be launched with google as its start page.
You can list and remove aliases: