I'm not sure about explaining it but you can get it here. The .prg is documented. -
http://mmfudg.lansing.com/tips_etc.htmDan
>Hey,
>
>There's a modification that you can make to the _SCCTEXT program that keeps the bogus changes in SCA/VCAs from showing up. Can anyone point me toward something explaining it?
>
>I'm feeling lazy.
>
>Marty