[fontforge-users] How to add a new glyph from a png image ?

[Stéphane Vander clock via fontforge-users]

Hello,
1/ I have an already made font (.ttf)2/ I want to add to this ttf a new glyph taken from a png image i have3/ Save this font in a way i can use it under android (CBDT)
How to do this ?