What does the cryptic crossword clue "Toulouse-Lautrec took content that’s oddly-numbered (5)" mean?

The wordplay uses a hidden word. A hidden answer (‘content’) in ‘Toulouse-Laut REC TO ok’, for the right-side pages of a book. The answer is RECTO.

Toulouse-Lautrec took content that’s oddly-numbered (5)

Guardian Cryptic #29385 | 13 Down | 2024-05-17 flower