Comment 44 for bug 168164

With this change it has become "optional", users can finally choose their preferred SVG units with the default as "industry" standard points for text. This is really the opposite of the previous situation of px only "hard coding".

> it might make sense to make it optional, and default to using the units for the GUI only
If really needed, I am ok to add a Preference to "hard code px output" - however there should be a strong case for this. Should we encourage users to not use these standard SVG units because some "other" programs don't render those units correctly ?