Stage directions for the set, the lighting, and the creation of characters are necessary for visualizing the play.
Stage directions refer to all the instructions written into the script of a play, indicating stage actions, movements of performers, or production requirements in order to carry out a play on stage to entertain an audicence.
For instance, one of the purpose of a playwright's stage directions is to allow the actors to know who should enter the stage and from where they should enter or exit the acting area.