* BUGS
+** modify-frame-parameters behaviour broken
+http://lists.gnu.org/archive/html/bug-gnu-emacs/2008-01/msg00058.html
+http://lists.gnu.org/archive/html/emacs-devel/2008-01/msg01367.html
+
+This should move the R frame edge 20pix to the R of the R screen edge.
+Instead, it moves the L frame edge 20pix to the R of the L screen edge.
+(modify-frame-parameters nil
+ '((user-position . t) (user-size . t) (left - -20)))
+
+This should move the L frame edge 20pix to the R of the L screen edge.
+It also moves the L frame edge 20pix to the R of the L screen edge.
+(modify-frame-parameters nil
+ '((user-position . t) (user-size . t) (left + +20)))
+
+(It works in Emacs 21.)
+
+
** Does deleting frames run Lisp code? If so, can we get rid of that?
It is a dangerous design.
http://lists.gnu.org/archive/html/emacs-devel/2007-09/msg01330.html