Often I find myself with some text where I want to exclude a certain part of the text, say the first three characters of 40 lines. The fastest way I could think of to do this would be to draw a rectangle and copy the text. I am mostly using Windows, but I am sure grep or something similar could do this with a tiny bit of code. My best way of doing this is to open Command Prompt. Then run "Edit" (yes the good old one). Then paste the text in there (this actually takes a significant amount of time). Then I am able to select the rectangle I am after.
Is there any other editors that support this feature? I am familiar with Notepad++.