yeah the manual is an interesting one.
in my current workshop we have comprehensive technical resources (in binders) for SRAM, Shimano mechanical, Shimano Di2 and the brand we sell
its constantly used for reference, and new information is always being added
the recent shift to 11 speed road transmission from Shimano has brought a raft of new information and even tools
who would have known that 11 speed ultegra has a 19-page manual and plastic setup tool just for the front derailleur?