OurBigBook
If given and true, forces a the link to be an external link.
Otherwise, the external is automatically guessed based on the address given as explained at Section 3. "External link".
Common use cases for the external argument is to link to non OurBigBook content in the curent domain, e.g.:

Ancestors

  1. Link
  2. Macro
  3. OurBigBook Markup
  4. OurBigBook Project