9. The method of claim 7 , wherein the request from the client device includes a glyph identification bitmap that identifies the one or more existing glyphs already arranged in the consecutive sequence in the extensible data structure.
7. The method of claim 6 , further comprising receiving a request from the client device for the font subset, wherein the request from the client device identifies the one or more existing glyphs already arranged in the consecutive sequence in the extensible data structure.