+++ /dev/null
-digraph fence_sw_r_collpase2 {
-margin=0
-//ranksep=.3;
-
-N1 [label="A: fence(release)", shape=none];
-N2 [style=invis, shape=point];
-N3 [style=invis, shape=point];
-N4 [label="B: load(acquire)", shape=none];
-
-N1 -> N4 [label="sw", color=blue, penwidth=3, constraint=false];
-N1 -> N2 [color=invis, weight=100];
-N3 -> N4 [color=invis, weight=100];
-{rank=same; N2 N3}
-}