QDM - "M" = magnetic heading
QDR - "R" = either 'reciprocal' (of QDM) or 'RADIAL' (as in VOR)
QTE - true (bearing) from a station...assume an ATC tower...assume a female ATCO .... QTE = " CUTIE from the tower"
QUJ - don't know of any reason to use it...so forget it!!