Changes

And specifically to address reassignments when using USB devices used in such implementations as Firefox Portable (http://portableapps.com/apps/internet/firefox_portable) one must w:/ = currently use f:/ SUBST to alias a drive or a pathname in a commandalthough this has now tied up two drive letters, making user's w: to match the automatic assignment of the usb device window external to f: both Firefox and Firefox bookmarks.

To alias a drive letter to a path on the active drive (external to Firefox) SUBST W: \firefoxportable\data\profile  To alias a drive letter to the current drive letter (external to Firefox) SUBST X: \ This assumes that you would be able to have specific drive letters not assigned (W: and X:) so that you can create aliases.  The above usage implementation suggestions should not conflict with the use of user defined keyword shortcuts such as of portable:, presentation:, presentation:b, which when used as keyword shortcuts have a space immediately after the shortcut. The use of colons in all my keyword shortcuts has proved very advantageous to me.