(@buy @sell )
%100
+0
+42
[@main]
ҩ... ʲôѾ֪ˣ\
ߣðɣô˶Ͻ߰ɣ߶߶\
 </@buy> ҩƷ\
 </@sell> ҩƷ\
 < /@exit>\
[@buy]
ҵҪ\
ôôѡ\ \ \  
 < /@main>\
[@sell]
̫ˣҵ...\
ԺϽøɶɶȥɣ\ \ \
 < /@main>\
[goods]
ǿЧҩ            100       3
ǿЧħҩ            100       3
ҩ()          100       3
ħҩ()          100       3
ҩ            100       3
ħҩ            100       3
̫ˮ   	      100	3
ǿЧ̫ˮ   	      100	3