No decompilation of Kerning and Mark Positioning

Opened a font containing OT tables compiled by Microsoft VOLT and saw the
GlyphCompositionDecomposition ccmp feature is decompiled and looks ok.
The font also contained Kerning and Mark Positioning features but these
were not seen in the decompiled script.
Are these features supported? Will they be?

Mike

They’re not supported yet — Supported Substitution Types.

Maybe later.