1.修正，页眉页脚为空时，若设置的边距为0时，打印结果与预览不一致的情况。



2.修正页眉或页脚为空时，会出现“内存访问错误”的提示的问题。



3.修正，页眉页脚为多行时，调整边距游标的定位问题。



4.修改了在有页眉页脚时，如果body的margin与padding都为0时，会出现页眉页脚盖住内容的情况。



5.增加左右不可打印区域对打印的影响。-1. Amended header and footer is empty, if the margins set to 0, print the results and preview the inconsistency. 2. To amend the header or footer is empty, there will be " memory access error"　message problem. 3. Correction, multi-row header and footer, margins to adjust the positioning of the cursor. 4. Modify the header and footer in there, if the body of the margin and padding both to 0, there will be covered on the content of header and footer. 5. Increase the print area is not about the impact on the print.