Earlier quoted context omitted.
I don't have intellij installed on my computer here, when you say 'split vertically,' do you mean it basically opens two views of same file next to each other, each view scrolling independently? If so, that isn't what I want -- almost every IDE and text editor already does that. What I want is similar to how MS Word takes a single blob of text and reflows it in multiple columns.
Interesting idea. Don't think it's been done with an IDE before. Expanding code based on context would be cool too. (eg. second column shows the implementation of whatever the first column's cursor is on - super handy when stepping through code)
http://www.gnu.org/software/emacs/manual/html%5Fnode/emacs/F...