...is the "Quote" button. Sure, it's a good idea. But you can never tell quite what it's going to do. If you select at least one complete paragraph of a post and click Quote, it's a fairly safe bet it'll blockquote it. But if you select only part of a paragraph to quote, sometimes it'll blockquote, sometimes it'll put it in italics, sometimes it'll enclose it in double-quotes ... you click and take pot luck.
It'd be a lot more useful if it behaved consistently, and more useful still if you could define that behavior.
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(Then again, given what you've written, I'll continue to do so.)
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