SCOUR 1.4 converts nulls to spaces in Forth source code.
usage:
    SCOUR C:\MySub\MyProg.Blk

Scours any Nulls chr$(0) from the file as these act like ;S but
are invisible. Any nulls found are quietly converted to spaces.
The program now displays a . for each block containing nulls.
The file should be a multiple of 1024 bytes long.  MASM/OPTAsm
source included.  This program is copyrighted, but may be copied
freely.  It may be used for any purpose except military.
Version 1.4 just embeds the new address.

WARNING! SCOUR only works with 8.3 filenames.