What's the difference on a mvn dependency-tree
output between a '+' and a '\'. It seems fairly arbitrary to me, but I'm sure it's not...
+- com.tom:artifact:pom:6.0.0:compile
| +- com.tom:artifact2:jar:1.0.4:compile
| \- com.tom:artifact3:jar:6.0.0:compile
| \- (com.tom:artifact4:jar:1.0.4:compile - omitted for duplicate)
[I've obviously removed the actual group/artifact ids...]