There is a tutorial on Latin Diacritical Marks and a tutorial on Complete Composites using the CompositeData.xml data file (which can be edited), and a video tutorial on the recommended Anchor-based Glyph Positioning
- The old method uses positioning data. More flexible, but more complicated, and less reliable as it is font dependent.
- The new, anchor-based positioning, using anchors to position composite glyph members such as accents (diacritical marks). Anchors can be moved to reposition the accents.