User's Guide to the SDL Editor

This class provides a text editor specialized for editing System Description Language (SDL) files. The editor is automatically invoked whenever the .sdl extension appended to its name. The EditSDL class, which implements the editor, is derived from the EditProgram class, and therefore inherits all of its features. Its facility for tagging comments, strings, and keywords is inherited from this base class.

SDL

http://www.tdr.dk/public/SDL describes SDL:
SDL is a Specification and Description Language standardized by ITU (International Telecommunication Union). The language has been evolving since the first recommendation in 1980, 1984, 1988 and 1992 when Object Oriented features were included in the language. SDL is widely used in the telecommunications field.

SDL is not directed specifically at describing telecommunications services, but it is a general purpose description language for communication systems. The basis for description of behaviour is communicating Extended State Machines that are represented by processes. Communication is represented by signals and can take place between processes or between processes and the environment of the system model. Some aspects of communication between processes are closely related to the description of system structure. An Extended State Machine consists of a number of states and a number of transitions connecting the states. One of the states is designated the initial state.

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Last updated: 05/19/98, comments to: tycho@eecs.berkeley.edu