Run commands system default and user definable.

Run commands are used to access windows files, folders, applications, settings etc.

By default windows os is provided with predefined run commands, here are list of some;

Pre-defined Run commands

Run Command	Description/Usage
documents	Open doccuments folder
videos	Open videos folder
downloads	Open downloads folder
recent	Open recent folders
pictures	Open pictures folder
logoff	Logoff your computer
control	Open control panel
iexplorer	Open internet explorer
inetcpl.cpl	Open internet settings
magnifier	Open magnifier
notepad	Open notepad
osk	Open on-screen-keyboard
mspaint	Open paint
stickynot	Open stickynotes
msconfig	Open system configuration settings
taskmgr	Open taskmanager
wmplayer	Open windows media player

Still there are many run commands predefined in windows you can explore them.

Run commands can be user defined. Your favourite applications can be accessed easily using these user defined commands.
Follow these steps to create your own run commands to your favourite application/folder/file.
1) Open desktop and right click on it. Select new> shortcut. A window opens asking for the location of the item(shortcut to be created) .
2) Click on browse and select the application or folder or file and click on next.
3) Type a name for the shortcut which is also the command to be entered in the run window. click ok.
4) You can see the shortcut that you created on the desktop. Now cut/copy that shortcut icon and paste it in the windows folder.( C: program files > windows). Thats it you are done.
5)Refresh your desktop, open run and type the name of the shortcut you just created and hit ok.

Watch this tutorial how to create user defined run command.