A 3-bit field (CMPSCDICT_CE_CHILDCT) specifying the number of
children. The total number of children plus additional extension
characters is limited to 5. If this field plus the number of additional
characters is 6, it indicates that, in addition to the maximum number
of children for this entry, there is a sibling descriptor entry that
describes additional children. The sibling descriptor entry is located
at dictionary entry CMPSCDICT_CE_FIRSTCHILDINDEX plus the value of
CMPSCDICT_CE_CHILDCT. The value of CMPSCDICT_CE_CHILDCT plus the number
of additional extension characters must not exceed 6.
