To run off a copy of the macro description, type nroff -Tla36 0. macdoc.n To run off a copy of the plotting document, type nroff -Tla36 0. plot.desc If you like different descriptor files may be used (by changing the -Txxx option.). The plot.desc file should have the \\u and \\d entries altered to \u and \d to allow sub and superscripting...... pete. i.