We have attempted to provide several layers of documentation beginning with the Beginners' Guide which provides some tutorial information about MDSplus. Next is the Users' Guide which provides more detailed tutorials on using MDSplus. The Reference section contains reference manuals for many of the MDSplus utilities and programming language interfaces. The Glossary is a list of MDSplus keywords and their definitions. The FAQ system is a searchable list of Frequently Asked Questions on MDSplus topics.
If you still can't find what you are looking for you might try looking at the older version of the MDSplus documentation.
The MDSplus documentation is now implemented using mediaWiki (thanks to Mark London at the MIT PSFC) so if you would like to help in the documentation effort please use the "Log in" link at the top right corner and request an account. Any assistance will be greatly appreciated even if just to correct minor mistakes and especially to add more content.