TODO:

catalog.pl -- mostly working
freemap.pl -- mostly working
dos33read.pl -- mostly working for simple text files
dos33write.pl -- started
dos33umlock.pl -- mostly working
dos33lock.pl -- mostly working
dos33rename.pl -- mostly working
dos33delete.pl -- in progress
dos33copy.pl -- started
zap.pl -- partially working
prozap.pl -- partially working
procat.pl -- partially working
profree.pl -- partially working
proread.pl -- partially working
prowrite.pl
prorename.pl
prodelete.pl
procopy.pl