OpenType Layout Features - Group

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The group keyword is used to declare a group of glyphs to be used for Chained Context Substitution and several GPOS lookup types.

 

group @<group name> [ <glyphs> ];

 

Where:

name is a name you can create yourself. You may only only use a-z, A-Z, 0-9 and "_" in your name and it must start with an @ (at) sign. Names are case-sensitive, and may only be declared once.