Extra Subst - program designed to make access to frequently used folders of your computer easier. It is also used to create, edit and remove virtual drives of your computer.
Example 1:
By default the folder "My Documents" is situated in the operational system "MS Windows XP" rather uncomfortably:
"C:\Documents and Settings\User Name\My Documents\"
With the help of the program "Extra Subst" you can create a virtual drive - for example drive "R:\" and select "My Documents" folder. After that, in your system the drive "R:\" will appear in which your documents will be kept. To access your documents you just click the drive icon "R:\" and there is no need to look for it in a folders tree.
Example 2:
You can create virtual drives for any folders with which you work often. For example, you can create drive "M:\" for the folder with your musical files "d:\archive\music\", drive "V:\" for the folder with your video files "d:\archive\music\" or drive "G:\" for the folder with your games and you do not need to divide your hard drive into additional partitions for that.
Example 3:
If you a web-designer you can make your project folder as a separate drive. In that case your project will be the same as if it were on Internet server.