* (relative) should be the default.
>
> I would make this the default; see comments above. I assume that
> relative widths will use the CALS algorithm recently described here by
> Paul Grosso.
>
Points, picas, inches and centimetres should be included.
> In addition to the units listed above, we also need the traditional
> printer's units -- the point and the pica. And I would grudgingly add
> inches and centimeters to the list for people who like to think that
> way about typography. The names should be
>
> pt | pi | in | cm
>
> where
>
> pi = 12 pt
> in = 6 pi = 2.54 cm (exactly).
>