>>770
http://www.parashift.com/c++-faq-lite/proper-inheritance.html#faq-21.4
http://www.parashift.com/c++-faq-lite/proper-inheritance.html#faq-21.5
http://www.parashift.com/c++-faq-lite/containers.html#faq-34.1
http://www.research.att.com/~bs/bs_faq2.html#arrays