Yesterday Silect released a new version of their MP Authoring tool targeted to IT Pros. This tool is called MP Author and is completely free for all System Center Customers and will be the tool we recommend to IT Pros who need to do MP Authoring.
It replaces previous tools we have piloted such as the Visio Authoring Tool which will be no longer recommended or supported.
I did a short first test and one of the things working in this version is editing the XML
There are probably more improvements I’ve not checked but make sure you download this new version from their website!
Also check my previous blog post about this great tool.