[selected_node] | element/part | 
+-id | number/integer | 
+-stdout | number/integer | 
+-test | element/part | 
| +-node1 | element/part | 
| | +-node1 | text/plain | node1
| | | :-a | text/plain | a
| | | :-b | text/plain | b
| | | :-c | text/plain | c
| | +-node2 | text/plain | node2
| | +-node3 | text/plain | node3
| +-node2 | text/plain | node2
| | :-a | text/plain | a
| | :-b | text/plain | b
| | :-c | element/part | 
| | | +-node1 | text/plain | node1
| | | | :-a | text/plain | a
| | | | :-b | text/plain | b
| | | | :-c | text/plain | c
| | | +-node2 | text/plain | node2
| | | +-node3 | text/plain | node3
| +-node3 | text/plain | node3
| +-reference | text/cybol-path | .test.node2:c.node1:b