## $none is undocumented, so I'm (khw) trying to do some documentation
## of it now. It appears to be if there is a mapping in an input file
## that maps to 'XXXX', then that is replaced by $none+1, expressed in
- ## hexadecimal. The only place I found it possibly used was in
- ## S_pmtrans in op.c.
+ ## hexadecimal. It is used somehow in tr///.
##
## To make the parsing of $type clear, this code takes the a rather
## unorthodox approach of last'ing out of the block once we have the