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Timeline for Levels: how do they work?

Current License: CC BY-SA 3.0

10 events
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Jan 1, 2014 at 16:41 history edited DavidC CC BY-SA 3.0
included another negative levels drawing thanks to Raul Nahrain.
Aug 3, 2013 at 10:11 history edited DavidC CC BY-SA 3.0
only one type of diagram included.
Dec 3, 2012 at 17:57 history edited DavidC CC BY-SA 3.0
new pictures
Dec 2, 2012 at 20:01 comment added Leonid Shifrin Great answer, David! Big +1.
Dec 2, 2012 at 19:34 vote accept Lorenzo Pistone
Dec 2, 2012 at 19:03 comment added Lou Great visuals! Like it.
Dec 2, 2012 at 18:54 history edited DavidC CC BY-SA 3.0
added 72 characters in body
Dec 2, 2012 at 18:47 history edited DavidC CC BY-SA 3.0
added 67 characters in body
Dec 2, 2012 at 18:27 history edited DavidC CC BY-SA 3.0
added 108 characters in body
Dec 2, 2012 at 18:21 history answered DavidC CC BY-SA 3.0