🚀 go-pugleaf

At the risk of sounding foolish ...

When I bought my Mac Plus (used, about 6 months ago) it came with a hard drive
that had lots of Free/ShareWare on it, some with documentation, some without.
I'm slowly figuring out what a lot of the undocumented stuff is and how to use 
it.  One of these without docs is SFScrollInit (which I have loading just 
because it's there).  

Now either it does something rather subtle, or I'm not very observant,
but I can't seem to figure out what it does or how to use it.  Would some
kind person please give me a bit of background and usage info on SFScrollInit?

FYI, I've got a 1 Meg Mac Plus, which is about 1.5 years old, a 20Meg Dataframe
external hard drive, and am using System 4.? (I think it was the last of 
the 4 series).

Thanks,
       Greg

P.S.
What is this Boomerang program I've seen discussions about?  Is this something
everyone should have (and if so, where can I get it)?
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Greg Feldman-Hill     {seismo|cbosgd}!osu-cis!sppy00!glf  -or-  glf@sppy00.UUCP
OCLC - Online Computer Library Center ...  Dublin, Ohio
"... blah blah blah ... nothing clever to say today ... blah blah blah ..."

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Greg Feldman-Hill     {seismo|cbosgd}!osu-cis!sppy00!glf  -or-  glf@sppy00.UUCP
OCLC - Online Computer Library Center ...  Dublin, Ohio
"... blah blah blah ... nothing clever to say today ... blah blah blah ..."