Clue: Orientation letters?

Answer: ACDC

Length: 4

---

Similar Clues:

• Map letters until 1991 (SSR with 3 letters)
• Emergency letters at sea (SOS with 3 letters)
• Carpool lane letters (HOV with 3 letters)
• Three letters that start a Beatles title (PSI with 3 letters)
• Not originals of letters, for short (CCS with 3 letters)
• TV schedule letters (TBA with 3 letters)
• VCR remote letters (REC with 3 letters)
• Manhattan-based fashion letters (DKNY with 4 letters)
• Letters for one in the red (IOU with 3 letters)
• 2 letters (ABC with 3 letters)