font_identifier "LINE"; font_size design_size * pt#;
font_coding_scheme:="LATEX LINE";
mode_setup;

nominal_width = 1;	% use single-width lines
input c-line;

%arrow dimensions:
arrowlen#=.4*qqw#; arrowht#=.15*qqw#; arrowcurve#=.1*arrowht#;
input line;