Compile eweb.erl with your favorite Erlang.
evaluate the expression eweb:file("eweb").
Evaluating this expression will cause a number of files to be created eweb.tex, Makefile, eweb etc.
Give the command Make doc to make the documentation. This will create the file eweb.dvi.
Note: for this to work you must have installed LaTeX on your machine. It is assumed that you have already done this :-)
The command eweb scans the current directory and looks for any .lit files which have a later date stamp that the corresponding .tex files. It then runs eweb:file on any such files.