The Overview page is designed to be a quick reference on how to develop, test and deploy a plug-in. It is also a navigational center where you can follow the hyperlinks to navigate a particular page or execute a particular command.
The Plug-in Content section explains the structure and content of each section of the plug-in manifest.
The Testing section provides shortcuts to quickly launch a runtime workbench to test and debug the plug-in.
The Deploying section lists the steps required to successfully build and package the plug-in.