Miele PWM 912 Operating And Installation Instructions page 31

Items left in the drum could discolor other items in the next wash or
become discolored themselves.
Remove all items from the drum.
Check the folds in the door seal for any foreign objects.
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Tip: Leave the door slightly open to allow the drum to dry.
Switch the washing machine off with the  button.
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If applicable, remove the used cap from the detergent dispenser
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drawer.
Tip: Leave the detergent dispenser drawer slightly open to allow it to
dry.
Program start – program end
31