I'd like to build a CSDS sequence database that contains sequences for use 
in teaching a basics/mainstream class. It would be helpful if there were 
a way to populate a "dance" by applying a filter that says "show me all 
sequences that are at or below a given move in the Callerlab list". 

For example, make everything beneath Cloverleaf available for 
selection. Is there any way to do this?