(typically the current branch), and stage 3 is the version from
the branch being merged.
-Here is an illustration, by Jon Loeliger. Both node B and C are
-commit parents of commit node A. Parent commits are ordered
+Here is an illustration, by Jon Loeliger. Both commit nodes B
+and C are parents of commit node A. Parent commits are ordered
left-to-right.
G H I J