B2evo has a simpler one, it's called notepad :P

Ideally you shouldn't be hacking/tweaking the core as everything would be settings that were preserved through an upgrade

.... in the meantime there's notepad :p

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Well, that killed that idea pretty quick :)
I'll just start an Admin only blog and post the myriad of tweaks, edits etc etc that are part of pre release versions.

Assuming yer admin only blog survives the next upgrade, that's probably a sensible idea ;)

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Does pages work for this? An admin blog means you can do it privately. I'm not sure if pages let you make a private or protected page. Haven't played with it much...

I used to always put the same note in the top of any file I hacked that said something like "HACKED FILE AT function whatever_it_was" or sometimes "around line 1380" so that I would know where I did damage. It helped, but when the whole structure of the files changes (rarely and recently) my method gave me no clue as to what core functionality I tweaked. Fortunately it's been very little since the end of the 0.* generation ...

@John: https://addons.mozilla.org/nl/firefox/addon/2011?id=2011&application=firefox

Nice extension, thanks Afwas