Software facilitates the generation of industry standard script. There are programmes like Final Draft and Movie Magic Screenwriter which put the words into an appropriate screenplay format while we type. It spares the wrter the hassle of margin requirements and he/she can concentrate on basic story-telling.There are development software to let you marshal your thoughts before you commence writing, e.g Dramatica Pro. Charater-based structuring is possible with Contour. Some programmes combine story development and formatting —  Movie Outline and Montage.