Why is my /stand/ much older than my FreeBSD?

[Gary W. Swearingen]

I have a /stand/ with entries dated 18'dec'02 while I've CVSUP'd
and built several versions of 4.x and 5.x since.

I'm guessing that 18'dec'02 was my last CD install and that's what
installed /stand/.  Correct?  Why doesn't it get updated or removed?
Why is there both a /stand/sysinstall and a /usr/sbin/sysinstall ?
Since I have the latter, may I delete /stand/ without loosing anything
useful?

The FAQ and Handbook refer only to "/stand/sysinstall".  That seems
wrong, if it's going to be an obsolete version.  Comments, please.

Thanks.