853     def __init__(self, base, marks, location=None):  argument
855         self.base, self.marks = base, marks
858         builder.add_mark_base_pos(self.location, self.base.glyphSet(), self.marks)
862         for a, m in self.marks:
869     def __init__(self, ligatures, marks, location=None):  argument
871         self.ligatures, self.marks = ligatures, marks
874         builder.add_mark_lig_pos(self.location, self.ligatures.glyphSet(), self.marks)
879         for l in self.marks:
893     def __init__(self, baseMarks, marks, location=None):  argument
895         self.baseMarks, self.marks = baseMarks, marks
898         builder.add_mark_mark_pos(self.location, self.baseMarks.glyphSet(), self.marks)
902         for a, m in self.marks: