[Chimera-users] Edit and UnDo?

To whom it may concern: Although this would be a departure from the current menu structure in Chimera, would it be possible to add a conventional "Edit" to the menu that would be populated with actions appropriate for editing? In addition, either in a new Edit menu or in the current Actions menu, would it be possible to add a global "Undo" function? Thank you for your consideration. Sincerely yours, Rudy