SWAPSUB.SH

The SwapSub command is used to exhange the contents of two subboards. Enter 
the subboard letters of the first and second subboards; the titles, messages 
and other information of the first subboard is interchanged with those of the 
second subboard. You can type '?' to get a subboard listing, or press the 
<return> key to quit the command without making any changes.