There're no generic escape codes for printers. Each printer, besides supporting manufacturers printer language, may also have aditional Emulation modes. They're listed usually in the printer manual.

>I have developed a small utility which takes as parameter the text file generate in a FPD application and then sends it to the local printer. Works well except that I cannot use the printer's escape codes for making the font bold, 5 cpi, 17 cpi, etc.
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>Can anybody point me to generic printer codes that USB printers use? The printer documentations I have seen are very minimalistic and do not have any technical docs, nor do the hardware guys know anything more than plugging it in.