Topic or Argument Link
It indicates that an entry is linked to another entry, i.e. has relationship or correlation.
Valid children: Issues, Opinions, Comments
A link cannot have a topic, argument, or question as child
A link is not a topic or an argument
Link types: Child (default), Parent (should not support?), Reference (related). A child will automatically appear as related in the opposite side.
Bidirectional link: reflects the corresponding behavior on the opposite side
Correlation to parent (applies to argument with a topic parent): neutral (child or based on link type), Pro, Con
Allow override to title and contextual title