Checked with a throwaway script, and added the missing entries. NEWS
now has a comment on how to use the file, which is only visible in the
raw text version. Added the documentation changes to NEWS.
* Enabled internal links; a phrase in backticks is linked to the
corresponding link target and turns into the corresponding title.
* Linked all existing references in Scripts.rst
* Created corresponding link targets
* Fixed formatting of some tables of arguments.