NDF_ACGET( INDF, COMP, IAXIS, VALUE, STATUS )
-- Obtain the value of an NDF axis character component
NDF_ACMSG( TOKEN, INDF, COMP, IAXIS, STATUS )
-- Assign the value of an NDF axis character component to a message token
NDF_ACPUT( VALUE, INDF, COMP, IAXIS, STATUS )
-- Assign a value to an NDF axis character component
NDF_AMAP( INDF, COMP, IAXIS, TYPE, MMOD, PNTR, EL, STATUS )
-- Obtain mapped access to an NDF axis array
NDF_AUNMP( INDF, COMP, IAXIS, STATUS )
-- Unmap an NDF axis array component