这是一篇关于Altium Designer 6.9 PCB设计软件的高级应用文档说明：包括规则设计，绕等长走线、以及层切换的方法！-This is an article on Altium Designer 6.9 PCB design software application documentation, senior: including rule design, a long walk around the other line, and layer switching method!

基于protel AD6.9版本的PCB设计基础，讲述了设计PCB和画原理图的标准和注意事项-Based protel AD6.9 version of the PCB design basis, about the design of PCB and schematic drawing standards and precautions

AD6.9学习的英文资料，对于PCB设计是一个很好的一款软件。(AD6.9 learning English materials)