`Pause`¶

Pause[n] pauses evaluation for at least n seconds (wall-clock time) and then returns Null.

$ wo 'Pause[0]'
Null

AbsoluteTiming confirms that Pause actually waits:

$ wo 'AbsoluteTiming[Pause[0.2]][[1]] >= 0.2'
True

The result of Pause is always Null:

$ wo 'AbsoluteTiming[Pause[0.1]][[2]]'
Null

Pause¶