thanks, that helps a lot! With this I was able to successfully get the preview of my glyph to work, and I can see that when I edit my shape on the screen, the preview changes as well. This is very cool! I think a lot of my initial problem came from the mouse interface in the Glyphs tab. I didn't realize that two clicks were required, one to highlight the row and another to highlight the specific text box. And I didn't realize that there were two fields, one for name and one for letter. It might be worthwhile to put borders around the text boxes in the 'Glyphs' tab, similar to what was done in the 'Global Settings' tab. Also, has the Font tab been deliberately disabled? It behaves differently than the other three tabs, and it is not clear why. It would probably also be worthwhile to develop some documentation for this, since it is more complex than the other dialogs, like 'Fill and Stroke'. Just one final question, can this new glyph be used directly in any way in Inkscape, or is it necessary to first process it through Font Forge? Anyways, excellent work, hope to see more in the future ...