diff --git a/ftplugin/ott.vim b/ftplugin/ott.vim
new file mode 100644
index 0000000..b519125
--- /dev/null
+++ b/ftplugin/ott.vim
@@ -0,0 +1,17 @@
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+setlocal comments=:%
+
+setlocal commentstring=%\ %s
+
+setlocal formatoptions-=t formatoptions+=croql
+
+if !exists('b:undo_ftplugin')
+  let b:undo_ftplugin = ''
+elseif b:undo_ftplugin !=# ''
+  let b:undo_ftplugin .= '|'
+endif
+let b:undo_ftplugin .= 'setlocal comments< commentstring< formatoptions<'