File	Title	Manuscript Id
Chapter 1. Adding categorical variables to scatterplots	stat_tutor_backup_20170608_ch_4_adding_categorical_variables_to_scatterplots.html	5939a03f7894d2fa7f000077
DLAP questions	stat_tutor_backup_20170608_ch_4_adding_categorical_variables_to_scatterplots_dlap.xml	5939a03f7894d2fa7f000077