Hey BEnny,
Yeah the XML's are the profile for Mach, they can be found most of the time in: C:\Mach3\MachMill.xml.
You can rename them and have different setups for your machine, maybe one for Lathe and another for MIll.
They also hold the location of the screen you've loaded as well they hold all of the stored setting and changes made.
Yes in this XML reader you can edit values and save them

that is the big reason that I developed it...also it takes my quad core computer a good minute to open a XML in Note pad to make changes and then it looks like a mess.
Actually I had no idea on how many different setting there are in Mach, since they are organized in this XML reader it is easy to find and see all Mach's available functions.
Try to drag one of your XML's into the reader you'll be amazed at all these hidden function Mach has
