PB打印预览，不错的PB打印PBL，界面简单实用,PB print preview, print PB good PBL, the interface is simple and practical

pb系统中对打印页面的控制（自动翻页，定义打印纸的参数，页面大小等）没有现成的控件，此PBL库是一个通用的打印程序-pb on the printed page, the system control (auto flip, define the parameters of the print paper, page size, etc.) are not readily control, the PBL library is a common printing program

打印机自定义pbl,直接导入library,调用wf_print方法就能用了(Printer custom PBL, direct import library, call wf_print method can be used)