問題：
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). 當我正在編輯一個大文件時，我經常想讓它同時在兩個編輯窗口中打開（例如，作爲參考，或者因爲我一次在文件的兩個不同部分上工作）。
Is there any way to do this with Eclipse? 有沒有辦法用Eclipse做到這一點？
解決方案：
參考一： https://en.stackoom.com/question/8daC參考二： https://stackoom.com/question/8daC