subject headings are terms from a controlled vocabulary that are assigned to books in WebCat and to periodical articles in the Library's online databases.

generic terms to narrow and focus a MeSH subject heading search; on OVID systems, the scope of each subheading is presented on the right hand panel of the search screen where subheadings are selected. One or several headings may be selected at a time, and "all subheadings" may be selected.

Smaller headlines used to break up longer passages of text and to call attention to particular points.