Installation Invoking Eplain Installation Invoking Eplain Installation ************ Your TeX installation should already contain a version of Eplain ('eplain.tex') in its main 'texmf' tree; with TeX Live, it's in '.../texmf-dist/tex/eplain/eplain.tex'. Generally, you can just use that version and there is no need to do anything else. But if you want to use a newer version of Eplain for a given document, you can put the new 'eplain.tex' in the document's directory, and it will be found. If you want to install a new 'eplain.tex' in some other place, set an environment variable (commonly, 'TEXINPUTS') to tell TeX how to find it. Distributions should also create and maintain the 'eplain.fmt' file file. But if you want to do it yourself, you can: $ touch eplain.aux $ initex This is TeX, ... **&plain eplain (eplain.tex) *\dump ... MESSAGES ... You must make sure that 'eplain.aux' exists _before_ you run 'initex'; otherwise, warning messages about undefined labels will never be issued. You then have to install the resulting 'eplain.fmt' in your local 'texmf' tree or set an environment variable ('TEXFORMATS' to tell TeX how to find it. You'll need to consult your distribution's documentation about that.