3 texidoc = "The feta font has arrow heads"
9 \arrow-head #X #RIGHT ##t
11 \arrow-head #X #LEFT ##t
13 \arrow-head #Y #RIGHT ##t
15 \arrow-head #Y #LEFT ##t
19 \arrow-head #X #RIGHT ##f
21 \arrow-head #X #LEFT ##f
23 \arrow-head #Y #RIGHT ##f
25 \arrow-head #Y #LEFT ##f