DTL (DVI Text Language) is a means of expressing the content of a DVI file, which is readily readable by humans. The DTL bundle contains an assembler dt2dv (which produces DVI files from DTL files) and a disassembler dv2dt (which produces DTL files from DVI files).

The DTL bundle was developed so as to avoid some infelicities of dvitype (among other pressing reasons).

The author is Geoffrey Tobin.