add underlay files for listdirectives

As was noted, 'listdirectives' didn't include the underlay files that make
it really worthwhile.  I've just gone through all the plugin
documentation, modified it to remove installation information and renamed
the files to match the directives rather than the plugins.  This can now
serve as useful underlay.

I've only gone through plugins in the 'plugins' dir.  I did not go through
the 'contrib' dir.

1 files changed, 19 insertions, 0 deletions

diff --git a/underlays/basewiki/directive/toc.mdwn b/underlays/basewiki/directive/toc.mdwn
new file mode 100644
index 000000000..e499ee824
--- /dev/null
+++ b/underlays/basewiki/directive/toc.mdwn
@@ -0,0 +1,19 @@
+The `toc` directive is supplied by the [[!iki plugins/toc]] plugin.
+
+Add a table of contents to a page:
+
+	\[[!toc ]]
+
+The table of contents will be automatically generated based on the
+headers of the page. By default only the largest headers present on the
+page will be shown; to control how many levels of headers are shown, use
+the `levels` parameter:
+
+	\[[!toc levels=2]]
+
+The toc directive will take the level of the first header as the topmost
+level, even if there are higher levels seen later in the file.
+
+The table of contents will be created as an ordered list. If you want
+an unordered list instead, you can change the list-style in your local
+style sheet.