Thread:Icefirephoenix/@comment-34929636-20180508164532/@comment-34929636-20180509022837

How it works:

for the transclude operator (imports entire contents of target page), the default DOMAIN target is Template. Other DOMAINS include Category, User, User Blog, and Special (not all pages in Special are allowed, in particular ones that evaluate differently based on user, and of course circular references). Using a colon with no domain sets the target to the root domain.

For the LINK OPERATOR, the default domain is the root domain.