Select the Wikipedia article. For example: http://en.wikipedia.org/wiki/Apollo_11
The name of the article in this case is Apollo 11
On the left side below the search box where it says 'toolbox' look for 'Special pages.' Click on that, then click on the link where it says 'export pages.'
...or go to this link: http://en.wikipedia.org/wiki/Special:Export
Type in the name of the article, in this case, Apollo 11
IMPORTANT: UNCHECK the box that reads 'Include only the current revision, not the full history' -- leaving this checked defeats the entire purpose of exporting it and hacking on the xml file.
Click on the Export button.
In your web browser, select 'save page as.' and save the file to disk with an appropriate filename (such as WikipediaApollo11.xml).
Open the file in your preferred text editor. Search for the first instance of <title>. You should see:
Change that to
Save (as text file with extention .xml, probably the same filename).
Now you're ready to import.
On the left side below the search box where it says 'toolbox' look for 'Special pages.' Click on that, then click on the link where it says 'Import pages' below Restricted special pages.
...Or go here: http://lunarpedia.org/index.php?title=Special:Import
Click on the Browse button or paste the path and filename into the import box.
If all went well, you should see:
- GFDL:Apollo 11 100 revision(s)
You can now go to: http://lunarpedia.org/index.php?title=GFDL:Apollo_11