Autodesk Inventor 2011 has lot of new and enhanced features and one of them is the addition of Autodesk Inventor Wiki Help.
What is a Wiki ?
A wiki is a website that allows the easy creation and editing of any number of interlinked web pages via a web browser using a simplified markup language or a WYSIWYG text editor. Wikis are typically powered by wiki software and are often used to create collaborative websites, to power community websites, for personal note taking, in corporate intranets, and in knowledge management systems.
Autodesk has added the Wiki tool in Autodesk Inventor 2011 under > Get Started > Community > Wiki Help