DEF_LOOKUP "VN108" PROCESS_BASE PROCESS_MARKS ALL DIRECTION LTR
IN_CONTEXT
 LEFT GROUP "VN108GLYPHS"
END_CONTEXT
AS_SUBSTITUTION
SUB GLYPH "uni0F71"
WITH GLYPH "uni0F71.altN108"
END_SUB
SUB GLYPH "uni0F74"
WITH GLYPH "uni0F74.altN108"
END_SUB
SUB GLYPH "uni0F75"
WITH GLYPH "uni0F75.altN108"
END_SUB
END_SUBSTITUTION