+ * @SPI_ROLE_EXTENDED: This object's role is not included in the standard role list and
+ * should be queried by name.
+ * @SPI_ROLE_HEADER: An object that serves as a document header.
+ * @SPI_ROLE_FOOTER: An object that serves as a document footer.
+ * @SPI_ROLE_PARAGRAPH: An object which is contains a paragraph of text content.
+ * @SPI_ROLE_RULER: An object which describes margins and tab stops, etc. for text objects
+ * which it controls (should have CONTROLLER_FOR relation to such).
+ * @SPI_ROLE_APPLICATION: An object which corresponds to a desktop application,
+ * which may have children of @SPI_ROLE_FRAME or other type.
+ * @SPI_ROLE_AUTOCOMPLETE: The object is a dialog or list containing items for
+ * insertion into an entry widget, for instance a list
+ * of words for completion of a text entry.
+ * @SPI_ROLE_EDITBAR: The object is an editable text object in a toolbar
+ * @SPI_ROLE_EMBEDDED: The object is an embedded component container.
+ * This role is a "grouping" hint that the contained
+ * objects share a context which is different from the
+ * container in which this accessible is embedded.
+ * Uses: document embedding, "panel applets", etc.
+ * @SPI_ROLE_LAST_DEFINED: Used to determine the end of the role enumeration.
+ *
+ * Describes the role of an object
+ *
+ * These are the built-in enumerated roles that UI components can have.
+ * Other roles may be added at runtime, so an AccessibleRole >=
+ * SPI_ROLE_LAST_DEFINED is not necessarily an error.