125     def actual(self, option=None, displayof=None):  argument
128         if displayof:
129             args = ('-displayof', displayof)
152     def measure(self, text, displayof=None):  argument
155         if displayof:
156             args = ('-displayof', displayof, text)
165         displayof = kw.pop('displayof', None)
166         if displayof:
167             args = ('-displayof', displayof)
180 def families(root=None, displayof=None):  argument
185     if displayof:
186         args = ('-displayof', displayof)
219     print(f.metrics(displayof=root))
222     print(f.measure("hello"), f.metrics("linespace", displayof=root))