[mpeg-OTspec] Re: MarkToBase clarification?

Erwin Denissen erwin.denissen at high-logic.com
Wed Feb 7 09:12:44 CET 2018

Hi Martin,

 > To clarify this statement (and I would have others check this).

 > What
 > this is saying is that marks are attached to their bases based on
 > attachment point alignment, as others have said, but the origin of the
 > mark is stored as an offset relative to the advance of the base.

I don't think this is how it works. I think Kamal describes it correctly.

 > So if,
 > after you have attached, you change the advance of the base, all the
 > attached marks will move too. So, if you are going to change the advance
 > of a base, do it before you attach the marks. Attach late is the general
 > advice in OT.

This is not how it works in our font editor, so no worries when you're 
using FontCreator.

Best regards,

Erwin Denissen


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