Related Clues:

• "Ask me later," on a schedule
• Program abbr
• Letters in TV Guide
• Course list abbr
• Letters for an open schedule slot
• TV Guide's "We don't know yet"
• Not yet filled: Abbr
• Not yet on the sched
• Placeholder in a bracket
• Unfilled slot abbr
• "Schedule uncertain at press time" abbr
• Sked note where a cancellation happened, maybe
• Not yet known: abbr
• Placeholder letter on schedules
• "We really don't know yet," on a sched