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From Chris Lilley <ch...@w3.org>
Subject Re: Units in SVG - PDF
Date Mon, 14 Feb 2011 05:16:36 GMT
On Saturday, February 12, 2011, 2:08:38 AM, jonathan wrote:

jw> H Chris & Tim.

jw>   I think that the confusion comes from an example in the spec,
jw> section 7.10 Units.  Without context, the reader might pick out the 1pt == 1.25px...

Thanks for the helpful pointer. I agree that this example could be taken as a general statement,
and I will make sure it is reworded to clarify that this is one particular example.

jw> my 2 cents

jw> --- clip
jw> The other absolute unit identifiers from CSS (i.e., pt,        
jw> pc, cm, mm, in) are all defined as an appropriate multiple        
jw> of one px unit (which, according to the previous         item, is
jw> defined to be equal to one user unit), based on         what the
jw> SVG user agent determines is the size of a px unit (possibly
jw> passed from the parent processor         or environment at
jw> initialization time). For example,         suppose that the user
jw> agent can determine from its         environment that "1px"
jw> corresponds to "0.2822222mm" (i.e.,         90dpi). 

This sentence in particular could mislead:

jw> Then, for all processing of SVG content:

 Chris Lilley   Technical Director, Interaction Domain                 
 W3C Graphics Activity Lead, Fonts Activity Lead
 Co-Chair, W3C Hypertext CG
 Member, CSS, WebFonts, SVG Working Groups

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