The illusions use in the film, television,theater, or entertainment industries to simulate the imagined events in a story are traditionally called special effects (a.k.a. SFX, SPFX, or simply FX). In modern films, special effects are usually used to alter previously-filmed elements by adding, removing or enhancing objects within the scene. The use of special effects is more common in big-budget films, but affordable animation and compositing software enables even amateur filmmakers to create professional-looking effects.