There are three practical table lamps.
In Act III a shaded reading lamp.
In Epilogue a desk lamp and a goose-neck.
There is a 1000 amber on red spot in fireplace to be used in Act II.
R. U. R.
LIGHT CUES
Act I. Nothing.
Act II. Fireplace on when Nana strikes match. Off when Nana says “There, that’s the end of them.”
Act III. (one) table lamp and #17 off at start of Act, on at cue from Fabry: “Ah, they are there.” Off on “And they are working.”