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NAME
     tt_default_session - retrieve the  current  default  session
     identifier

SYNOPSIS
     #include <Tt/tt_c.h>
     char *tt_default_session(void);

DESCRIPTION
     The  tt_default_session()  function  retrieves  the  current
     default session identifier.

RETURN VALUE
     Upon successful completion, the  tt_default_session()  func-
     tion  returns  the  pointer to the unique identifier for the
     current default session.  If the pointer is NULL, no default
     session  is set.  The application can use tt_ptr_error(3) to
     extract one of  the  following  Tt_status  values  from  the
     returned pointer:

        The operation completed successfully.
        The ttsession(1) process is not running and the  ToolTalk
        service cannot restart it.
        The current default process identifier is out of date  or
        invalid.

APPLICATION USAGE
     A session can have more than one session  identifier.   This
     means  that  the  application  cannot  compare the result of
     tt_default_session()      with      the      result       of
     tt_message_session(3) to verify that the message was sent in
     the default session.

     The application should  use  tt_free(3)  to  free  any  data
     stored in the address returned by the ToolTalk API.

SEE ALSO
     tt_c(5), tt_ptr_error(3), tt_free(3).

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