I have a couple of questions.

First question,
When setting the parent group, does it take into consideration the parent groups parent?
Would Group 3 get group 1 permissions if each group was set to be the parent of the group directly under it.
Group 1
Group 2
Group 3

Second question,
When looking at the instructions for permissions (https://umod.org/documentation/umod/plugins/permissions) it says to use umod. or u. but this is not working on my server. I still have to use either oxide. or o.

Has this not been implemented yet or am I running an older version etc?