Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
return nil, or the pair of canonical filters (left == new1 | self, right == new2 | other)
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
Overrides: Filter
tell whether a region passes this filter
Overrides: Filter
return the simplest filter for looking at the children
Overrides: Filter
Overrides: Object
Overrides: Filter
Overrides: Filter
Overrides: Filter