[wiki] What "m" stands for?

[Patryk Benderz]

Hi all,
couldn't figure out better place to ask for that. What does "m" stands
for in wiki history of changes[1]? Example:
2010-02-08T23:04:30 Jonci (Talk | contribs) m (6,921 bytes) (typos) 
                                           ^^^
[1]
http://wiki.openmoko.org/index.php?title=Community_Updates/2010-02-10&action=history

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Patryk "LeadMan" Benderz
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