object classes that can contain other objects

[Brandon McCombs <bmccombs@ma.rr.com>]

Hello all,

Is there a published list somewhere or something in the schema that will 
allow me to determine all object classes that are or are not able to 
contain other objects?  For example, inetorgpersons, printers, and 
ntusers are "leaf" nodes and therefore can never have anything below 
them (as far as I know; maybe some specialized objects like policies may 
be allowed to be under them).

Any pointers to information?

thanks
Brandon