Basic utility programs from the original TeX project at Stanford, comprising: dvitype, which converts a TeX output (DVI) file to a plain text file (see also the DVI structure topic); pooltype, which converts a TeX-suite program’s “pool” (string) file into human-readable form; and tftopl and pltotf, which convert between binary TeX font metric (TFM) files and human readable property list (PL) files.