ref data naming tweaked
no message
part parameter changed to reference parameter
updated
ref data instance removed
http://cvs.eurostep.com/bugs/show_bug.cgi?id=849#c6
http://cvs.eurostep.com/bugs/show_bug.cgi?id=921#c2
http://cvs.eurostep.com/bugs/show_bug.cgi?id=920#c3
http://cvs.eurostep.com/bugs/show_bug.cgi?id=843#c17
http://cvs.eurostep.com/bugs/show_bug.cgi?id=877#c3