; Converts the internal value to the external value
; for sets of codes & pointers.
; 'RAFNUM' = File # 'RAFLD' = Field #
; 'RAPCE' = piece position on 0 node
K
FLD(RAFNUM,RAFLD)
; Validate if field can be sorted on i.e, if
; non-multiple and is either a pointer, free text, set of codes,
; numeric or a date/time field.
; 'RAFNUM' = File # 'RAFLD' = Field #
; returns RAPASS: 0 if valid, else 1