% mathematical symbols by Anthony Phan.
% file: mathextr.mf (extra symbols)
% last modification: April 29, 2002.

def horizontal_rules_list=
  0.5[-d,h]-math_axis,0.5[-d,h]-math_axis+x_height,
  0.25[-d,h],0.5[-d,h],0.75[-d,h] enddef;