This is a programming language. It may be used to instruct computers to accomplish a variety of tasks which may or may not be domain-specific.
This template is obsolete. Use Template:Language instead.
Don't put a great deal of information in this box. It's primarily used in category pages (click "What links here" in the navbar on the left), not all of which will have much information in them. If a language category page has too little content, but too many articles, the infobox will overlap the article list. And that looks ugly.