Didn't we try to answer this for you a while back
Jim?
The developer said he would put some more info in the IDD (that would
show up in the IDFEditor when you look at the object) but I'm not sure he
got to it before V7.1 release because he was working on the 62.1
verification report.
He is on vacation right now -- back next week.
It looks like it got expanded but I'm not sure if it is clear yet.
And perhaps that field needs to be broken into two fields? One that
is "choice" (i.e. built in) with the possibility of user -- I
can't tell, really.