A series of all-caps sans serifs emulating marquee lettering with a cap height of 5 light bulbs, shown in PLINC’s One Line catalog (1971) in 9 variations: Act 1 (outlined with open dots), Act 2 (like 1, but with beams around the dots), Act 3 (solid with reversed dots), Act 4 (like 3 with additional beams), Act 5 (outlined with solid dots), Act 7 (like 1 but shaded), Act 8 (like 5 but shaded) Act 9 (solid dots only), Contour (like 3 with additional contour). All styles appear in Alphabet Thesaurus Vol. 2, except for Contour which was added in Vol. 3. The sample shows a mix (73421538C4).

Showtime is very similar to Act 4. See also Norton Doodle.