Improving the Plotscripting Dictionary
The master copy of the Plotscripting Dictionary is the wip/docs/plotdict.xml file in the SVN repository. A web browser can display this file directly, and a nightly version of it can be viewed at . There is a UNIX shell script wip/docs/update-html.sh which converts this file into the HTML copy of the Dictionary.
If you want to make improvements to the dictionary, first grab a copy of plotdict.xml. You can either download a full copy of the engine Source Code, or just download  and  and place them both in the same directory. You should be able to view the dictionary by pointing your web browser at file://C:/path/to/plotdict.xml or by drag-dropping the file onto your browser (or perhaps its tab bar). (However, Chrome does not seem to want to display the .xml file directly when viewing it as a file on your harddisk instead of as a page on the internet. You may have to use a different browser.)
Use a text editor to edit the XML file. One which understands XML is Notepad++, though even Notepad should work. The XML markup used is very simple and you can pick it up easily by looking at other commands; no knowledge of XML is required.