== Upgrading ==
-1.18 has several database changes since 1.17, and will not work without schema
+1.19 has several database changes since 1.17, and will not work without schema
updates.
If upgrading from before 1.11, and you are using a wiki as a commons
See the file UPGRADE for more detailed upgrade instructions.
-For notes on 1.17.x and older releases, see HISTORY.
+For notes on 1.15.x and older releases, see HISTORY.
== Online documentation ==