[1.打印收银小票](1.%E6%89%93%E5%8D%B0%E6%94%B6%E9%93%B6%E5%B0%8F%E7%A5%A8.md) [2.打印条形码](2.%E6%89%93%E5%8D%B0%E6%9D%A1%E5%BD%A2%E7%A0%81.md) [3.打印商品单据](3.%E6%89%93%E5%8D%B0%E5%95%86%E5%93%81%E5%8D%95%E6%8D%AE.md)