Script written with Scala, a digital signage management program; includes instructions that determine how and when digital images are displayed; used for controlling electronic billboards, dynamic digital signs, DOOH (Digital-Out-of-Home) advertising, employee TV, electronic posters, and other types of digital signs. Scala scripts are written in the ScalaScript language, which uses a proprietary syntax. Since SCA files are saved in a plain text format, they can be opened and edited with a basic text editor.