The search field
Currently, Bookworm supports one-word (unigram) or two-word (bigram) entries as search terms, entered via the search field.
The facet fields display the options for faceted search. Initially, clicking "All texts" will pop up a menu that displays the possible facet fields. After a selection is made, you can modify it again by clicking on that label. Initially, by clicking "All" or inside this box, another popup displays a scrolling list of values that can be selected for the given facet. Multiple values for a given facet field can be chosen by clicking inside this box. So, for instance, you can search for "Publication Country:US OR Canada". In addition, you can select values for multiple facet fields. See the figure below, in which three facet fields have been specified.
Clicking on the “information” button, shown by an “i” icon at the top right corner of the window, will display information about the project, about the HathiTrust Research Center and about the Rice Cultural Observatory.
Clicking on the "settings" button, shown by the "gear" icon which is next to the "i" icon, will pop up a menu for changing display options to specify "Time", "Metric", "Case" and "Smoothing".