OpenType shaping parameter

[svgeesus]

From Grzegorz Rolek ‏@grzegorzrolek
https://twitter.com/grzegorzrolek/status/662471907674079232

@nattokirai @svgeesus BTW, wouldn't OT shaping parameter be better named ‘OTL’? ‘OTF’ is often used vs TTF WRT outline data. @TiroTypeworks

[grzegorzrolek]

Yes, the rationale is that ‘OpenType Layout’ is the term used by Microsoft and others to describe text shaping capabilities of OpenType (https://www.microsoft.com/typography/otspec/TTOCHAP1.htm) and ‘OTL’ is a commonly used initialism. It has proved very useful in situations where ‘OTF’ would often be ambiguous.

[svgeesus]

Arguments in favour of OTL seem sound. I see no downside to changing it - does anyone else? Suggest we accept the change and close this issue.

[svgeesus]

Indeed the introduction says
perhaps "TTF", "OTF" or "SFNT" (the names of
commonly used TrueType and OpenType font formats
which is clearly using OTF as a format not as a layout type. I'm going to commit the change to OTL for this parameter.