问题：
When I'm editing a large file, I often want to have it open in two editing windows at once (eg. for reference, or because I'm working on two different parts of the file at once). 当我正在编辑一个大文件时，我经常想让它同时在两个编辑窗口中打开（例如，作为参考，或者因为我一次在文件的两个不同部分上工作）。
Is there any way to do this with Eclipse? 有没有办法用Eclipse做到这一点？
解决方案：
参考一： https://en.stackoom.com/question/8daC参考二： https://stackoom.com/question/8daC