If a movie were a person, its script would be the skeleton. The essentials—narrative, protagonists, dialogue, etc.—are all there, but they need to be fleshed out to fully come to life. Enter characters (either played by actors or animated), music, and special effects, and suddenly simple words on a page have transformed into a motion picture.

In the new Pixar-produced video below, which was first spotted by Gizmodo, you can compare the screenplay of 2015's Inside Out with the theatrical version released in theaters. The text scrolls down the screen's bottom half as a corresponding scene from the film progresses, allowing viewers to juxtapose what they're watching with what they're reading. This way, aspiring screenwriters and Pixar fans alike can see firsthand how a movie moves from a bare-bones script to a fully realized film.

[h/t Gizmodo]