ucsList
Posts a list of saved user coordinate systems. The list is incidentally stored in the
database under every file node under "Coord Systems". This function posts the list for
the current file. Within this dialog box, the "Save" button adds the current
UCS to the list. "Recall" sets the current UCS to the selected list item. "Update"
resets the selected list item to the current UCS. "Remove" removes the selected item
from the list. List items may renamed by slowly double clicking on its name. Doing
this starts a mini text editor on the the name until you hit enter.