[@main]
ͣսʿЩûǵĹŻ\
ѧ࣬Ϊ߲Ҫ׷\
ǿҪмǿ־\
սΪΪǿŬ\
<ãԸս/@Ըս>\
<ˣһ뿪/@exit>
[@Ըս]
ȻѾսľôҾ͸\
ǰѰһľţվͻᵽ\
֮أȥսʤħɣսʱˣ\
<˳/@exit>