| FeHyperLink | Contains a named table of HyperRefs and a set of Works which describe the usage and/or format of the... |
| FeHyperRef | Represents a single attachment to some material in context. |
| FeMultiRef | An undifferentiated set of HyperRefs |
| FePath | A sequence of Labels, used for context information in a LinkEnd. |
| FeSingleRef | Represents a single attachment to some material in the context of a Work, and maybe a Path beneath i... |