Supplied docstrings for SUBSTITUTE, SUBSTITUTE-IF, and SUBSTITUTE-IF-NOT.
Supplied docstrings for SUBSTITUTE, SUBSTITUTE-IF,
and SUBSTITUTE-IF-NOT.

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