Just as scriptwriters use special media-related vocabulary, they also mould their text into a specific format that is designed to accommodate the needs of their readers. This audience of potential collaborators needs to be able to glean certain information at a glance. Actors will want to see how many lines they have, producers will want a sense of the locations involved for budgetary reasons, and comic book artists will want to know how much space they have on a given page and how much will be eaten up by dialogue. It's for this reason that some script formats call out certain words in 'all caps' (LIKE THIS) or break text into chunks that feature consistent heads and typography. Overlong sentences or a convoluted structure will, therefore, not only keep readers from enjoying the content--as with any type of writing--but will also prevent them from actually being able to produce a script effectively. In a sense, this is a major trade-off in all forms of scriptwriting --it offers less of an opportunity to develop an authorial voice, but it provides a constant vehicle to practise trimming words and expressing ideas as efficiently as possible.
The role that the audience plays when writing a screenplay.