What does the cryptic crossword clue "What may cross boundaries for audience in particular way of writing? (5)" mean?

The definition is "particular way of writing?". The wordplay uses a homophone (sounds like). Homophone of “stile” The answer is STYLE.

What may cross boundaries for audience in particular way of writing? (5)

Guardian Cryptic #29046 | 5 Down | 2023-04-17 flower