Thanks a lot for the speedy reply!

The "atomic identifier" business is a bit beyond my current understanding of Maple but sure enough, the Ctl-Shift-minus seems to get the desired result. 

 Thank you very much for your help!

Thanks a lot for the speedy reply!

The "atomic identifier" business is a bit beyond my current understanding of Maple but sure enough, the Ctl-Shift-minus seems to get the desired result. 

 Thank you very much for your help!