tip-of-the-week: gnuplot/single_data_set_single_plot/.foolinggit (deleted); gnuplot/single_data_set_single_plot/single_data_set_single_plot.dat (deleted); gnuplot/single_data_set_single_plot/single_data_set_single_plot.eps (deleted); gnuplot/single_data_set_single_plot/single_data_set_single_plot.gnu (deleted)