说明：  《深入dos编程》是bai雷军92年和人合著的。佩服雷军的编程是因为雷军曾zhi经是武汉大学计算机系的学霸，dao仅用两年就修完了所有的学分。
(In depth DOS programming was co written by Bai Lei Jun in 1992. The reason why I admire Lei Jun's programming is that Lei Jun Zeng Zhi was a student bully in the computer department of Wuhan University, and Dao completed all his credits in only two years.)