Findings:
If you Log in you could create a "varA/var-<varA/var>,varB/var-<varB/var>" node. If you don't already have an account, you can register here.
If you Log in you could create a "varA/var-<varA/var>,varB/var-<varB/var>" node. If you don't already have an account, you can register here.