Fonts (was Re: [etoys-dev] Wording in Clouds)

Andreas Raab andreas.raab at
Sun Aug 2 16:10:03 EDT 2009

Bert Freudenberg wrote:
> Not quite - the tag is 'OTTO' and there is neither a 'loca' nor 'glyf' 
> table.

Yup. Checked the spec and .otf is used specifically as extension for 
Open Type fonts with postscript glyphs. If someone wants to look at this 
you'll have to look at CFF (Compact Font Format) specification. This is 
a bit out of scope for me right now.

>>> As for dfonts, is there any info on those?
> It is too easy. According to this article, ttf/ttc/otf are "Windows 
> formats" that OS X supports but its native format is dfont:
> I couldn't find a format spec yet though. But it appears to embed ttfs 
> literally.

Right. I spent some time digging and all I could find on them is that 
they are "data fork" fonts. I.e., where in the old days fonts stored 
their contents in the "resource fork" the dfonts store them in the data 
fork. Unfortunately, there does seem to be absolutely no information 
about what the header looks like so I'm not going to dig into this right 

I think as far as deploying Etoys is concerned we are in a reasonable 
state here - we can pick one or more fonts that are either:
* Shipped directly with the download (Deja Vu etc)
* Are available on the platform (Windows TTFs for example)
* Can be downloaded as an add-on for Etoys from the web page

   - Andreas

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