search reveals numerous requests for doing this in previous versions. I haven't found anything about how to do it.

has this been implemented?

In version 5.5, you can set default font size across all your brains. From the Notes tab choose File > Set Default Notes Style.

You can override this setting on a per brain basis by modifying the notes.css file in your brain database folder (the folder title will be [brain name]_brain). If one isn't there, copy it from the Program Files\PersonalBrain\Res folder, and you can then modify the font in the file.
Windows 7
OSX 10.6.3
Java SE 6
Zenrain,  thank you.  i had looked for options at notes, but missed it under "files" .  i also checked the help pdf's, but there was nothing there either, at least under the terms i searched with.

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