response to Comment on ex height

Werner,

Thank you for your comment on XSL FO at
http://lists.w3.org/Archives/Public/xsl-editors/2003JulSep/0008.html

You asked why there isn't the relative measurement unit "ex".

Our disposition of your comment is as follows:

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The XSL-WG intentionally disallowed the measurment unit ex, 
since it is not well-defined nor uniformly-defined for most 
vendor's fonts and since an ex unit does not exist on 
fonts/languages that do not have lower-case characters.

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Thank you for your continued interest in XSL FO.


Paul Grosso for the XSL FO Subgroup of the XSL WG