Siemens 
D12-52 Operating And Installation Instruction page 34

34
i If the programme sequence is changed by rotating
the programme selector or the programme is
cancelled, the preselected finish in time is also
cancelled. The programme duration of the newly
selected programme appears in the display. The
finish in time must be reselected (see also chapter
Changing the programme, page 37 and
Cancelling the programme, page 37).
i The laundry can be topped up at any time during
the finish in time. Close the washer dryer door.