With the new installment of Citrix XenServer, there have been some modifications to the CLI commands, Bjorn Andersson from Diverse Tips has created a very nice printable PDF poster that encompasses all of the XE commands available for this new version of XenServer. The image below is a preview of what is available on this PDF poster.

The PDF can be downloaded via the following link: XenServer 6.0 XE-Command Reference (1.1)