Lets say you open the door at 20, 8 and are in the house at 7, 9
ShiftXMap(A)=[x outside screen - x inside screen]
ShiftYMap(A)=[x outside screen - x inside screen]
ShiftXPos(A)=-13
ShiftYPos(A)=1
Or if you want to have two door shifts at 20, 8 and 19, 8
ShiftAbsoluteTarget(A)=True
ShiftXMap(A)=[x inside screen]
ShiftYMap(A)=[y inside screen]
ShiftXPos(A)=7
ShiftYMap(A)=9
EDIT: Use a shift save ("ShiftSave(A)=True" in the ini) to keep the shift working.