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If you'd have cut it differently.
A cut you'd have made differently, a caption style you wish it had, a thing that annoyed you. Two lines is plenty — it goes to the people who build it, and nothing else is done with it.
Got it — thank you. If you left an email, you'll hear back. Back to the site.
Something actually broken — didn't install, didn't render, came back wrong? That's support; it gets fixed rather than learned.