file-menu:save

This method is called when the save menu-item of the file-menu menu is selected. If file-menu:save is bound to #f instead of a procedure, the save menu item will not be created.

• (send a-frame:editor-mixin file-menu:save item evt) -> void
      item : (instance (derived-from menu-item%))
      evt : (instance control-event%)

  Saves the file in the editor.