(@buy @sell )
%100
+40
+1
[@MAIN]
ӭ,ʲôҪҰæ\ \
 </@buy>\
 </@sell>\
 <˳/@exit>

[@buy]
ѡҪƷ\ \
 </@main>
[@sell]
Ʒʺõ⣬Ұɡ\
һüǮ\ \
 </@main>
[goods]
    10            10
      10            10
    10            10
