File	Title	Manuscript Id
Chapter 1. Adding categorical variables to scatterplots	stat_tutor_html5_ch_4_adding_categorical_variables_to_scatterplots.html	58efd03e7894d2cc68000077
DLAP questions	stat_tutor_html5_ch_4_adding_categorical_variables_to_scatterplots_dlap.xml	58efd03e7894d2cc68000077