One point = 1/72 of an inch
One pica = 12 points
One em = The distance horizontally equal to the type size, in points, you are using. Eg. 1em of 12pt type is 12pt. (Thanks to Joe for correcting me on this.)
Semantic horizontal Forms - 0 views
ALA Drop-Down Menus, Horizontal Style - 0 views
The Horizontal Way - 0 views
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