Incaccuracy in the Handbook

[sin at openportal.org.ua]

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html

Quote:
"(for obscure technical reasons, IRQ2 = IRQ 9)"

Doesn't it seen to you that this sounds like a huge ignorance when stated in 
a fundamental document like FreeBSD handbook? If you just want to omit some
unnescessary technical details, maybe, you should rather just say "for 
technical reasons" instead?

P.S. Just for that case if an author of this chapter didn't know why it happens
that way:

"IRQ 2 - Cascaded signals from IRQs 8-15. A device configured to use IRQ 2 
will actually be using IRQ 9"
http://en.wikipedia.org/wiki/Interrupt_request