Possible Clues:

• Put a tick against Russian writer for the audience
• Put a tick against Russian writer on the radio
• Sounds like Russian writer will get black mark against his name
• Mark down dramatist to speak
• Maybe put a tick against what playwright sounds like?
• Give tick to author over the telephone
• Tick on list as having arrived or been completed
• Heard Russian dramatist? Tick list
• Writer told to mark attendance
• Mark “done” on a list