Question

Which line in this excerpt from act I, scene I, of Richard III is a stage direction?

RICHARD III (Duke of Gloucester):
. . . And if King Edward be as true and just
As I am subtle, false and treacherous,
This day should Clarence closely be mew'd up,
About a prophecy, which says that 'G'
Of Edward's heirs the murderer shall be.
Dive, thoughts, down to my soul: here
Clarence comes.
(Enter CLARENCE, guarded, and BRAKENBURY)
Brother, good day; what means this armed guard
That waits upon your grace?

GEORGE PLANTAGENET (Duke of Clarence): His majesty
Tendering my person's safety, hath appointed

Answer 1

hint: which line tells the actors where to go or what to do?