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$$$$ VENV     NOTICE  CHAT      11/09/12    21:18:30     7124           
                                             DATE     11/09/12

  Operateur VENV                          Voir aussi : 
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    MOT2  =  'VENV'  MOT1  ;



    Description:
    ____________

    The VENV operator retrieves the value of the environment variable 
    which name is MOT1.


    Contents:
    _________

    MOT1  :  String (MOT type object) corresponding to the environment
             (system) variable name to read.
             The string must not exceed 256 caracters.

    MOT2  :  String (MOT type object) containing the value of the read
             MOT1 name variable. In the case of a non defined variable,
             MOT2 contains the MOT type object ' ' (a single space).


    Notes:
    ______

    All the spaces are ignored when the variable name MOT1 is reading :

    "'VENV' 'USER' ;" and "'VENV' '  U S  ER  ' ;" give the same result
    (for instance, root).

    The accepted variable names are composed from of capital and/or small
    letters, numbers and the underscore token "_".
    The numbers are forbidden for the first token.