{
 "schema"       => string,
 "server"       => string,
 "labelField"   => ref to array of integers, 
 "valueField"   => integer,
 "sortOnLabel"  => integer boolean,
 "qualifier"    => internal pointer
}
When compiled against pre-5.0 APIs, labelField will always contain exactly one value.
Last changes to this page 26th June 1997 by d.j.adams@soton.ac.uk