The Autodesk BIM User Assistance Team is continuing work to enhance the online help. In this example, they are revising the Copy/Monitor documentation. Below is a version tailored for Revit Architecture (If you prefer a MEP or Structure version let me know).
From the User Assistance team:
In response to customer requests, we have enhanced the documentation that describes the Copy/Monitor tool. In addition to conceptual information (Why should I use it? When should I use it? Which elements can I copy/monitor?), this documentation includes workflows, procedures, best practices, and troubleshooting information.
This posting is a PDF generated from the online help file, so it looks like the online help, but the hypertext links are not active in this particular edition. We hope you’ll overlook this minor inconvenience, and focus on whether the information tells you what you need to know about this important feature of Revit.
We look forward to any feedback you can offer.