At the time, the availability of online documentation through the manual page system was regarded as a great advance.

Email support has been discontinued, and online documentation and tutorials have been frozen.

Study descriptions and online documentation, including questionnaires, of datasets can be accessed online free of charge and without registering.

The support site (online documentation and forum) has moved and has changed maintainer.

Printed and online documentation may differ in various ways, but still adhere to largely identical guidelines for prose, information structure, and layout.