.nf 
/REFERENCE xOffsetR yOffsetR [systemNameRef]
or
/REFERENCE NO                  ! no reference

position of off-source reference subscans

Real      :: xOffsetR          ! x-offset
Real      :: yOffsetR          ! y-offset
Character :: systemNameRef     ! name of system 
                               ! see /SYSTEM for choices

NOTE: with the usage /REFERENCE xOffsetR yOffsetR, both parameters are required,
but you can replace either parameter with * to leave it unchanged.
.fi

