putch(' ');

        textbackground(empty_colour);

        if (cx < disp)
            textbackground(default_colour);
        else if (old_val > val && old_disp > disp && cx < old_disp)
            textbackground(change_colour);

        if (cx < disp) {
            textcolor(default_colour);
            putch('-');
        } else if (old_val > val && old_disp > disp && cx < old_disp) {
            textcolor(change_colour);
            putch('-');
        } else {
            textcolor(empty_colour);
            putch('-');
        }

        putch(' ');

    // DARKGRAY and LIGHTBLUE don't show up for me... :-( --pld
    const unsigned short change = CYAN;
    const unsigned short empty  = LIGHTGRAY;

    const unsigned short change = LIGHTBLUE;
    const unsigned short empty  = DARKGRAY;

    // DARKGRAY doesn't show up for me... :-( --pld
    const unsigned short empty  = LIGHTGRAY;

    const unsigned short empty  = DARKGRAY;