Let's say the docs present a simplified view of reality... :-)

Dan Smith: I've tried (in vi) 'g/[a-z] [a-z]/s//_/'...but that doesn't cut it. Any ideas? (I take it that it may be a two-pass sort of solution). Larry Wall: I…

Let us be charitable, and call it a misleading feature :-)

It won't be covered in the book. The source code has to be useful for something, after all... :-)

It's documented in The Book, somewhere...

I spent this time polishing up the software/hardware documentation, renaming registers to be more meaningful. This was actually time well spent in my life.

Reading computer manuals without the hardware is as frustrating as reading sex manuals without the software.