(Not `lit2pgm'.) Assume that any code in the input file is written in <language> and process accordingly (automatic indexing, etc.). The <language> is normally intuited from the input-file suffix (e.g., `.lhs' suggests Haskell code). The `-x', `-p', and `-t' options may be used to tweak cross-referencing, page-breaking, and typesetting of code, respectively.