Re: units in MathML

Something I would like to add which could be of reference to the
following:

>The other alternative, which I think I favor, would be to use a
><csymbol> element to define units:
>
>  <cn>2</cn><csymbol definitionURL="...">cm</csymbol>
>
>This seems to be cleaner to me, and has the advantage that the default
>rendering would at least be intelligible.

useful URLS may come out of the OpenMath project, viz.

http://www.openmath.org/cdfiles/html/extra/cd/physical_consts1.html
http://www.openmath.org/cdfiles/html/extra/cd/units_imperial1.html
http://www.openmath.org/cdfiles/html/extra/cd/units_metric1.html

hope this helps,

Bill.