An important distinction in GX was drawn between a character and a glyph, a distinction also found in the Unicode Standard. A "character" was an abstract symbol from the character set of a writing system, such as the letter "f" in the writing systems of the Latin script. Whereas a "glyph" was a specific graphic shape from a particular font, whether the shape represented a single character or a set of characters. Thus, for example, the Hoefler Text font had glyphs to represent the letters "f" and "l". It also had another glyph to represent the "ligature" "ﬂ", which could be automatically composed (instead of the individual glyphs) wherever the two abstract characters "f" and "l" occurred in sequence in the source text.