In the following example, one adds 
to
, scales 
to the same magnitude
as 
, and then computes 
amplitudes.
The phases of 
will not be touched. The operations
are carried out for the selected reflections only. The
operation involving 
is necessary only when 
is actually used; note that the do statement does not automatically
add 
to 
.
RESOlution 8. 2.5 FWINdow 0.1 100000. DO COMPLEX (FCALC=FCALC+FPART) DO COMPLEX (FPART=0) DO SCALE (FCALC=FOBS) DO AMPLITUDE (FCALC=2*FOBS-FCALC)