@2000
  ϵͳ
    ṩϵͳϢDos Shellע͵ȹܡ
@2010
    Ϣ
@2020
    򿪻رעʹڡעʹڹرʱɼӿٶȡ
@2030
    лǰĻڡ
@2040
    ʱ˳ϵͳصDOS״̬exit·ϵͳ
@2050
    ˳ϵͳʱAltxϿʱ˳ϵͳ
@1000
  ģϰ
    9ģ⣬ÿеĿרҵľѡкǿ
ʵսԣǿٿǰһõ
@1010
    ѡһģ⡣
@1020
    ѡһģ⡣
@1030
    ѡùܺϵͳԶһԾṩܰ
ťСһ⡱͡һ⡱ťɷض˫ѡ
Ǳʱش˵Ļشûسȷϣ ESC 
зϳ׼𰸡ťʾǰȷ𰸣ѡǰжַ
һַͨǰ˵ť˳ѡһֱַԾϽ
ѡ񣬴ʱ輤ԾƶǰеĳһУʱ⼴ɵ
ǰ⣬»سֱӶԸ𣻿е󣬿ɼͳƳɼ
ťɼɼʾܷ֣ĿԼʵ÷
Ҵ󡱰ťҳⲢ׼𰸡 ʹ TAB 
Shift+Tab ɷֱͷѡҪĶܰťҲðť
ȼԾϽǵĵʱʾõʱ䡣ע⣺е
иĴ⣬е»ߴҷֱΪ ABCDԾвٱ
@1040
    һ˵
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