Board Thread:Questions and Answers/@comment-4441317-20161229203751/@comment-27632937-20170101115021

Boundary Manipulation can change or even remove the boundaries between dimensions.

Users of Distance Manipulation could potentially cross dimensons as well as obviously changing the distance between them although this is very much dependant on the universe this power is in.

Enhanced Vision can sometimes allow users to see other dimensions.

That's about all I can think of besides the obvious ones like mentioned above.