[net.micro.cpm] getting backspace on SCRIBBLE?

Herb Lin <LIN@Mit-Mc.ARPA> (01/15/85)

does anyone know how to do this?  In principle, it seems that you
should be able to insert into a MINCE-processed file a CTRL-H
(backspace), SCRIBBLE it, and then CRAYON it to get overstriking of
two characters, but I can't do it.  Can anyone out there help?

thanks..