What important information is being communicated in the left column of a two-column script format?

In a two-column script format, the left column primarily communicates action descriptions. This includes information about what is happening visually in a scene, such as the movements of characters, significant actions, and transition details. Action descriptions provide essential context for the visual elements of the film or video; they guide the director, actors, and crew in understanding how the scene should unfold on screen.

While production notes, dialogue, and camera movements are important elements in a script, they have their designated places in the format. Production notes typically appear elsewhere, whereas dialogue is presented in the right column. Camera movements might be included within the action descriptions but do not represent the primary content of the left column. The structure of the two-column format helps to clearly delineate action from dialogue, allowing for a straightforward reading of how a scene is intended to look and flow.