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Annotation of 43BSD/contrib/courier/README, revision 1.1.1.1

1.1       root        1: Title:         Courier
                      2: 
                      3: Author:                Eric C. Cooper
                      4: 
                      5: Address:       Computer Science Division, EECS
                      6:                University of California
                      7:                Berkeley, CA  94720
                      8: 
                      9: Net address:   cooper@berkeley (ARPA)
                     10:                ucbvax!cooper   (UUCP)
                     11: 
                     12: Description:
                     13: 
                     14: This is the Courier remote procedure call protocol for Berkeley UNIX
                     15: (version 4.2).  Courier is both a protocol and a specification
                     16: language.  The protocol specifies how remote procedures are invoked and
                     17: how parameters and results of various data types are transmitted.  The
                     18: specification language, somewhat reminiscent of Mesa, provides a simple
                     19: way of defining the remote interfaces of distributed programs.
                     20: 
                     21: Warning:
                     22: 
                     23: Complicated Courier types are sometimes incorrectly translated into C.
                     24: Until the next release, this can be avoided by always "factoring out" subtypes
                     25: as named types in their own right.
                     26: 
                     27: -- For example, use this:
                     28: 
                     29:        ChoiceType : TYPE = CHOICE OF {
                     30:                                a (0) => INTEGER,
                     31:                                b (1) => LONG CARDINAL,
                     32:                                c (2) => STRING
                     33:                        };
                     34:        T : TYPE = SEQUENCE OF ChoiceType;
                     35: 
                     36: -- rather than this:
                     37: 
                     38:        T : TYPE = SEQUENCE OF CHOICE  OF {
                     39:                                a (0) => INTEGER,
                     40:                                b (1) => LONG CARDINAL,
                     41:                                c (2) => STRING
                     42:                        };
                     43: 

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