Test for diverse extensions
 ===========================
 
 extlinks
 --------
 
 Test diverse links: :issue:`1000` and :pyurl:`dev/`, also with
 :issue:`explicit caption <1042>`.
 
 
 todo
 ----
 
 .. todo::
 
    Test the todo extension.
 
 .. todo::
 
    Test with |sub| (see #286).
 
 .. |sub| replace:: substitution references
 
 
 list of all todos
 ^^^^^^^^^^^^^^^^^
 
 .. todolist::