In screenwriting, a Beat is an indication within the parenthetical position that denotes a "pause" in the dialogue.
toc_collapse=0;Beat should be used as either a change of emotion tool for a character or a change of thought. Although the word "pause" has been used in the past, to look more professional, Beat should be used.
The term Beat should be placed in parentheses on the line directly below the dialog. Below Beat the dialog should continue without reiterating the character name.
STAN
Where's my rubber ducky?
(beat)
Well, where its?!