ref: d0bec7a498e467ce995b9ab3f2675d95e69d21d3
dir: /sys/lib/troff/font/devutf/charlib/RC/
/build_RC { pop size 4 div /side exch def currentpoint newpath moveto 0 side 1.5 mul rmoveto 0 side rlineto side 2.5 mul 0 rlineto 0 side neg rlineto closepath fill } def