How to delete file history?

[Mr Ron]

When I click on "file" on the opening toolbar; at the bottom of the popup, is a list of previous files used. How do I delete the history? When I don't save a file, it still appears on the file list.

[irneb]

Those things used to be saved in the registry (prior to the ribbon). Open the RegEdit.exe program in the C:\Windows folder. Seems to be something like this:
HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R19.0\ACAD-B004:409\Profiles\AutoCAD Architecture (Global)\Dialogs\Save Drawing As

or

HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R19.0\ACAD-B004:409\Recent File List

Note those are for ACad Arch 2013 on Win7-64. Yours might vary a bit, but not by much.

Or to make life easier, here's an old lisp of mine to do this: http://forums.augi.com/showthread.php?136876-Recent-files-list&p=1180660&viewfull=1#post1180660