In September-October 2015, we'll be changing the way we add cross references that link across guides (aka RTD projects) to the documentation set.
(Previously, if one guide included a link to another guide, we provided the URL of the destination as the link.)
Here are some notes from a team meeting on 24 Sept in case we need a cheat sheet during the transition period.
:ref:`prefix:label`
format for cross references... _Label:
format.make html
locally.make html
looks for live, published URLs when it runs, and throws messages if it can't find them. So, make html
for release notes in particular will throw warnings. :ref:`prefix:label`
format for a link to a different RTD project. For cross references within the same project, don't use the prefix.