[OpenFontLibrary] Adobe's Source Sans Pro

[vern adams]

You can use whatever value you like, BUT, Thin=100, ExtraLight = 200, Light=300 etc etc
So if you create a font with a usWeightClass of 250 it's neither ExtraLight or Light, but some software will need to know which it is and decide :)
Hence, it's a good idea to stick with a multiple of 100.
An app like DTL's OpenTypeMaster flags non multiples of 100 as 'invalid usWeightClass'

-v



On 3 Aug 2012, at 12:11, Denis Jacquerye <moyogo at gmail.com> wrote:

> On Fri, Aug 3, 2012 at 11:14 AM, vern adams <vern at newtypography.co.uk> wrote:
>> It's a bad OS/2 usWeightClass value (nothing to do with CSS).
> Where do you get that from?
> The specs http://www.microsoft.com/typography/otspec/os2.htm do not
> specify such restriction on usWeightClass, even if it describes
> specific values. Microsoft and Adobe frequently talk about a 1 to 999
> range (see http://blogs.adobe.com/typblography/atypi2006/CSS%20%26%20OT%2015.pdf
> or http://msdn.microsoft.com/en-us/library/system.windows.fontweights.aspx).

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