file-menu:between-open-and-revert in drscheme:unit:frame

This method is called between the addition of the open menu-item and before the addition of the revert menu-item to the file-menu menu. Override it to add additional menus at that point.

• (send a-drscheme:unit:frame file-menu:between-open-and-revert) -> void

  Calls the super method and adds a separator-menu-item% to the menu.