Theme or topic
Belonging in WRITING > TEXTUALFEATURES, THEMETOPIC is a very flexible tag. It has no controlled vocabulary associated with it, but can contain any information. It may enclose much more than a single word; it may record central themes, side issues in a text, or objects of observation or discussion. Place tags, for instance, often appear within TTHEMETOPIC tags in accounts of travel literature, and NAME tags within accounts of biography and criticism. (Accounts of place as it operates in fiction use a SETTINGPLACE tag.) This element applies to both theme and topic. Theme is the central idea in a text stated either directly or indirectly; topic applies to interesting subjects appearing in a work that might not aspire to the status of a "theme". The tag is useful in describing examples of genres such as educational or non-fictional texts. It has no mandatory or optional sub-elements or attributes.