To use the plugin, you will need to install WMD. Download the [WMD
source](http://wmd-editor.com/downloads/wmd-1.0.1.zip). In that zip file
-you'll find a few example html files, a readme and `wmd` directory. Move the
-`wmd` directory into the ikiwiki `underlaydir` directory (ie
-`/usr/share/ikiwiki/`). You should now have a `wmd/wmd.js` file as well as
-some other javascript files and an images directory in the same place.
+you'll find a few example html files, a readme and `wmd` directory. Create
+a 'wmd' subdirectory in the ikiwiki `underlaydir` directory (ie `sudo mkdir
+/usr/share/ikiwiki/wmd`). Move the `wmd` directory into the directory you
+made. You should now have a `wmd/wmd/wmd.js` file as well as some other
+javascript files and an images directory in the same place.
Note that the WMD plugin does **not** handle ikiwiki directives. For this
reason the normal `preview` button remains.