I'm having the same problem as Jennifer: unable to find Appendix B - and the Users DTD.
Please excuse my ignorance, but what are the full file extensions, or where do I find them? I have the following information but still haven't been able to find them, and have looked both in my OJS installation and within http://pkp.sfu.ca/
1) The users DTD:
"The Users XML Plugin can be used to import and export single or multiple users. You can view the complete DTD here: plugins/importexport/users/users.dtd. The root element is <users>. "
2) Appendix B
"You can view a sample XML user import file in Appendix B, and also in your OJS installation at plugins/importexport/users/sample.xml. "
(I couldn't find it following James's instruction to Jennifer, either sorry: "There's a sample file included with the plugin -- take a look at plugins/importexport/users/sample.xml." )
If someone could perhaps tell me the full file path and/or where precisely I shoul look that would be really handy.
Many thanks for your help!