OpenType is a format for scalable computer fonts. It was built on its predecessor TrueType, retaining TrueType’s basic structure and adding many intricate data
opentype
As we’ve discussed before, PDF files can contain a whole bunch of different fonts, but in the end most of them come down to two... Everyone knows a bit about fonts, but understanding them in more detail is a bit of a niche subject. Niche subjects tend to come... I do a lot of work with fonts, and when I tell people this they often seem surprised – surely there can’t be that... We’ve mentioned the Sanitiser for OpenType (OTS) before, but have never really gone into detail about why it exists, what it does, and why... The PDF format has been around for at least 20 years now, and throughout that time it’s continued to add the latest and greatest... 
