He means hatches, similar to how the hatch demo [1] fills in boxplots [1] http://matplotlib.org/examples/pylab_examples/hatch_demo.html http://matplotlib.org/e

He means hatches, similar to how the hatch demo [1] fills in boxplots [1] http://matplotlib.org/examples/pylab_examples/hatch_demo.html http://matplotlib.org/examples/pylab_examples/hatch_demo.htm...