Is there anywhere that the bits of the SYNC word are documented?

The specification is pretty clear, but that appears to have been overlooked.

“All frames are preceded by a 16-bit synchronization burst, which consists of 0x3243 (first 16-bit of pi) in type 4 bits”

I couldn’t find it easily either, which means we should probably move that around in the spec to be easier to find.
I’d also recommend having “SYNC” somewhere near it so it can be found using ctrl-f (which is broken in the pdf? is that just me?)