PSPad uses SynEdit, which does not support it.
This question has been asked many many times. Searching "code folding" in the
forum will give you more informations:
[url]http://forum.pspad.com/search.php?0,search=code+folding,page=1,match_type=A
LL,match_dates=0,match_forum=ALL[/url]

-- 
François

<http://forum.pspad.com/read.php?2,65036,65059>
PSPad freeware editor http://www.pspad.com

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