Difference from Pen Blocks

What's the difference?
Curiouscrab (talk | contribs) 22:35, 22 January 2013 (UTC)

This is about the actual concept of the pen and how it works in the program, whereas the other is about the blocks. However, this separation should probably be made more clear.
veggieman001 (talk | contribs) 23:32, 22 January 2013 (UTC)
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