Stage directions can be either explicit or implicit. Explicit directions provide specific instructions about what the actors should do, such as "Enter left" or "Cross to the window." Implicit directions, on the other hand, are less specific and may require more interpretation by the actors. For example, a stage direction that reads "He looks at her longingly" does not specify exactly how the actor should express longing, but it does convey a general sense of what the actor should convey to the audience.
In addition to providing instructions for actors, stage directions can also serve as a guide for the director, costume designer, lighting designer, and other members of the production team. They help to ensure that the production is faithful to the playwright's vision and that all aspects of the production come together to create a cohesive and engaging theatrical experience.