* display: list vectors in the current plot; select by name, type, or regex
V1 in 0 SIN(0 1 1k)
Vdd vdd 0 DC 5
R1 in out 1k
C1 out 0 100n
Rl out vdd 2k
.tran 20u 1m
.control
  run
  echo "--- display allv  (voltages only) ---"
  display allv
  echo "--- display .*branch  (regex: every branch current) ---"
  display .*branch
.endc
.end