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NAME
     tt_session_prop_set - replace current values for a  property
     of a session with a character-string value

SYNOPSIS
     #include <Tt/tt_c.h>
     Tt_status tt_session_prop_set(const char *sessid,
                                   const char *propname,
                                   const char *value);

DESCRIPTION
     The  tt_session_prop_set()  function  replaces  all  current
     values stored under the named property of the specified ses-
     sion with the given character-string value.

     The sessid argument is the name of the session joined.   The
     application   can   use   the  sessid  value  returned  when
     tt_default_session() is called.  The  propname  argument  is
     the name of the property to be examined.  The value argument
     is the new value to be inserted.  NULL removes a value  from
     the property list.

RETURN VALUE
     Upon successful completion, the tt_session_prop_set()  func-
     tion  returns the status of the operation as one of the fol-
     lowing Tt_status values:

        TT_OK   The operation completed successfully.

        TT_ERR_NOMP
                The ttsession(1) process is not running  and  the
                ToolTalk service cannot restart it.

        TT_ERR_PROPLEN
                The specified property value is too  long.   (The
                maximum  size  is implementation specific, but is
                at least 64.)

        TT_ERR_PROPNAME
                The  specified  property  name  is  syntactically
                invalid.

        TT_ERR_SESSION
                The specified ToolTalk session is out of date  or
                invalid.

SEE ALSO
     tt_c(5).

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