New users barely preformat text

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More like a feature request, but even though there's a nice button in the input text area, new users don't seem to realize it and they usually end up bloating their question with unformatted text, which is in a lot of cases very hard to read. Is there a better way to have them use the preformatted text feature?

What I can think of (not sure how practical these are though):

• Make the button larger
• Add a text, blink it (too classic)?
• Run a smart script to detect inline code that's not preformatted?