HBO Warning/Copyright Screens

Background
In 1981, briefly displayed a copyright warning screen at the end of their broadcast day. This practice ended on December 28, 1981, when HBO completed its transition to 24-hour broadcasting to compete with rival network Showtime.

(1981)
Warning: On a medium dark shade blue background, the following copyright warning appears in a small white Helvetica font with a black shadow:

Technique: None.

Music/Sounds: None.

Availability: Only seen at the very end of the channel's sign-off throughout 1981.