资料来源 : Free On-Line Dictionary of Computing

ALEF
     
         A programming language from {Bell Labs}.  ALEF
        boasts few new ideas but is instead a careful synthesis of
        ideas from other languages.  The result is a practical general
        purpose programming language which was once displacing {C} as
        their main implementation language.  Both {shared variables}
        and {message passing} are supported through language
        constructs.
     
        A {window system}, {user interface}, {operating system}
        network code, {news reader}, {mailer} and variety of other
        tools in {Plan 9} are now implemented using ALEF.
     
        (1997-02-13)