* alter a device value, re-run, compare
V1 in 0 DC 1
R1 in out 1k
R2 out 0 1k
.tran 1u 5u
.control
  run
  print v(out)[0]        $ 0.5  (equal divider)
  alter R2 = 3k
  run
  print v(out)[0]        $ 0.75 (1k:3k divider)
.endc
.end