if `ignoreSinglePoints` is True, single points are excluded from the computation of the bounds. The default value (False) keeps the current behaviour (i.e., single points are not ignored). https://github.com/robofab-developers/robofab/blob/master/Lib/robofab/pens/boundsPen.py See discussion at: https://github.com/typemytype/booleanOperations/pull/20