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.
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. 10. The method of claim 9 , further comprising updating one or more entries in the glyph identification bitmap corresponding to the one or more glyphs in the requested font subset sent to the client device.