North, no doubt with some trepidation, raised to five clubs.

North raises to game, and you lead a club.

North raised aggressively to game and West led the diamond king.

South signed off in three spades, but North raised to game, of course.

North would presumably have raised defensively with three or more hearts.

North used three clubs to ask South to show his suit, and then raised to slam.

North raised to game, reaching a contract that had a good chance.

North raised an eyebrow, but didn't ask the obvious question.

And North surprisingly raised to game (but if he had passed, it would have ruined a good story).

When North raised to four spades, the picture changed totally.