Computer networks are not a heterogeneity. Computer fonts are an indication of a type of technological complexity that allows for wide varieties of font faces, sizes, shapes, distortions, and types of mark-up. By way of illustration, allow me to compare these two elements. Computer fonts do the same work in the digito-semiotic world that HTML does in the virtual world. They both are a set of instructions for the compilation of contents.
Fonts compile and represent digitized texts, while HTML compiles and displays hypertextual elements.
On load a derivative of each element is placed. On unload that copy is discarded. However, computer fonts are not representation per se. They are governing principles for representation. They are at once totally crucial in the transfer of textual information and yet they are completely disposable, contingent and atemporal.