"There are invisible borders that you no longer cross," he said.

"But before you step over the invisible border onto the silver sands, you'd best be aware of the dangers."

Effectively, Lion windows have thin, invisible borders around them used only for resizing.

He moved very slowly along the invisible and ill-defined border.

Cafeteria seating was dictated by invisible borders we all recognized.

The first robots reached the invisible border of the energy dome which surrounded the four vessels.

However, if the player returns within the invisible border, the monster stops.

The company has plans to grow beyond the invisible borders of the online world pretty soon, starting with some tentative radio and print advertising programs.

The works reveal a move towards that invisible border as a painted space unto itself".

It is a fact that this was an invisible border in the past.