AppleLink used client software written in Pascal under contract to Apple by Pete Burnight/Central Coast Software. The program extended the desktop metaphor of the Macintosh Finder to encompass the areas on the remote server site. These were displayed as folders and files just as local folders and files were. In addition, there was a set of public bulletin boards, and the ability to use email via the service — although initially only between AppleLink users. File transfer for drivers and system software was another important role, and for this Apple created the AppleLink Package format to combine and compress the two forks of a Macintosh file into one for storage and sending. Apple also developed their Communications Control Language (CCL) for AppleLink, a language still used in a very similar form for today's Macintosh modem scripts.