Hello Stuart Hemming,
Thanks for the note. We will fix this to show both ways of editing the project file. We've already built the guide for the SP2 release, but this so this is going to make it for 4.2.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items