That's working on blocks with a class of 'code', and it seems the code tags get output as pre blocks with that class.

In reply to Re^3: Those 'wide load' posts (code) by mr_mischief
in thread Those 'wide load' posts by talexb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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