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;
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