I agree - I'd like to see the 0x3..0x7 encodings documented somewhere - perhaps as an 'informative' section in the official specs? We co-opted LDLite's syntax, we should acknowledge this.
Having attempted to implement support for these codes myself, I also had to do a lot of digging to find a useable spec - and it doesn't help that of the two main places on the net which do document it, one of them is completely and utterly wrong!
