NullSet.sit

Nullset is a trio of Hypercard externals that handle the null character.
Null is ascii 0, and is treated inconsistently by Hypercard, which
sometimes sees it as a space, and sometimes sees it as an end of file
marker. If you don't know what a null is or why you would need to deal
with it, you don't need Nullset.

Path: /www/exparrot/files.tidbits.com/info-mac/dev/card/null-set-11.hqx