def isRecordidField?( fid )
      fields = lookupFieldsByType( "recordid" )
      (fields and fields.last and fields.last.attributes[ "id" ] == fid)
   end
def isRecordidField?( fid )
      fields = lookupFieldsByType( "recordid" )
      (fields and fields.last and fields.last.attributes[ "id" ] == fid)
   end
Returns whether a field ID is the ID for the key field in a QuickBase table.