status.i4.v = get_personal_user_name_c(user_name.i1a.r, top_row.i4.v,

	This routine retrieves the identity of the person running the
	current program.

	user_name	returned user name (USER_NAME_LEN + 1 characters)
			(This string is filled only when a valid
			 user is retrieved.)
	top_row		upper row where input window should be placed
			(if necessary)
	left_column	left column where input window should be placed
			(if necessary)

	This function returns status values as follows:

	OK			success
	CLIB_NOT_ENABLED	program is running on the web
	CLIB_GENERR		couldn't determine default current user or
				user failed to log in

	This function requires the following include files:

	cnsparam_h, cbslib_h

	Related functions:

	my_user_name, user_is_a_person, user_validation_c, user_password,
	dialog_setup_c, window_restore_hint_c,
	set_validated_user_name_timeout_c, retrieve_validated_user_name,

	C/C++ usage:

	char	user_name[USER_NAME_LEN+1];
	int	status;
	int	top_row = WMNGR_CENTER;
	int	left_column = WMNGR_CENTER;
	status = get_personal_user_name_c(user_name,top_row,left_column);