Related Clues:

• Mark and Mike in unconscious state
• M's keyboard neighbor
• House officer working for Mark
• Pause-causing punctuation
• What gives you pause?
• Key next to a period
• Male in unconscious state: this gives pause
• Period neighbor, on a keyboard
• Fellow graduate catching minute butterfly
• Butterfly -- also a sign one's turned up in 23 Across
• Bottom part of a semicolon
• Butterfly, male, in unconscious state
• Commanding officer mixed martial arts item seen in lists
• Character in 'Monsters, Inc.'
• Mark is male in very deep sleep