This statement is incorrect?
The element should be within a <Presets> container element, can contain one or more <Parameters> element, and it has the following attribute:
Presets should be Preset
I also assume this should be under Preset rather than Presets as the example suggests.
Also for Set, Inc and Dec the statement
To use this event you would call the preset name then append the string "Inc" to the end, for example incrementing a value inside the input event <Preset> "Sound_COM1_Volume":
to be correct you would say
name then append the string "_Inc" to the end
add in the underscore
I know picky picky picky, but this stuff is complicated enough to second guess the documentation.