I think it's just a matter of time till this will be added to the Q's & A's list as some things are of a higher priority than others.Still think it is a good idea to add this explanation to the Q&A list also. But at least on this forum it will be found typing in the word default.
and this may be of help to some readers here as well as Avatar pointed me to it-@aegis is working on a new better knowledge base about all Adguard products.
NOTE: as admitted a lot is out dated in the documented material of Adguard and it's being worked on to be updated. I personally like the program updates and bug fixes to stay of a high priority and ask my questions here.A lot is outdated. I guess last time this doc was updated in 2013.
Also you'd better use this link (https seems to be broken):
http://adguard.com/en/help/