file-menu:between-print-and-close in drscheme:frame:basics-mixin

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

• (send a-drscheme:frame:basics-mixin file-menu:between-print-and-close file-menu void
     file-menu : (is-a?/c menu%)

  Calls the super method. Then, creates a menu item for multi-file searching. Finally, adds a separator-menu-item%.