Added a comment related to the technique used to identify parts of a form that occur in the macroexpanded version of the form.
Added a comment related to the technique used to identify parts
of a form that occur in the macroexpanded version of the form.

clasp-developers/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,vtomole/SICL,vtomole/SICL