The "Theme" field provides a place to record words and phrases that can be used to categorize work items in a useful way. It implements hierarchical keywords, which can be referenced by fieldnames. The hierarchical keywords look just like pathnames, e.g. /service/student/graphics. The fieldname "/service" would then have the value "student/graphics". This facility is intended to be useful in experimental categorizations, on the assumption that such use may eventually be moved to new database fields.
When specifying this field in a customized sort or display, the name "theme" can be used.