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-
-CSS Length Reference
-  To bound, or not to bound, that is the question
-
-It's quite a reasonable request, really, and it's already been implemented
-for HTML.  That is, length bounding.  It makes little sense to let users
-define text blocks that have a font-size of 63,360 inches (that's a mile,
-by the way) or a width of forty-fold the parent container.
-
-But it's a little more complicated then that. There are multiple units
-one can use, and we have to a little unit conversion to get things working.
-Here's what we have:
-
-Absolute:
-    1 in ~= 2.54 cm
-    1 cm = 10 mm
-    1 pt = 1/72 in
-    1 pc = 12 pt
-
-Relative:
-    1 em ~= 10.0667 px
-    1 ex ~= 0.5 em, though Mozilla Firefox says 1 ex = 6px
-    1 px ~= 1 pt
-
-Watch out: font-sizes can also be nested to get successively larger
-(although I do not relish having to keep track of context font-sizes,
-this may be necessary, especially for some of the more advanced features
-for preventing things like white on white).
-
-    vim: et sw=4 sts=4