Related Clues:
- Not yet decided: Abbr
- Itinerary abbr
- "Ask me later," on a schedule
- Like some coll. courses
- Program abbr
- Letters in TV Guide
- 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
- Like basic courses: Abbr
- "Schedule uncertain at press time" abbr
- Sked note where a cancellation happened, maybe