2.1. Deictic gestural usage:

Macbeth: Hang out our banners on the outward walls;
The cry is still 'They come:' our castle's strength
Will laugh a siege to scorn: here let them lie
Till famine and the ague eat them up:
Were they not forced with those that should be ours,
We might have met them dareful, beard to beard,
And beat them backward home.
[A cry of women within]
What is that noise?

In this case that is used gesturally as the addressee has to be audio-visually present to understand to what the speaker is referring.