It is actually really common to have several monitors, at least one of which is vertical in order to have one dedicated "code-reading" screen. When I worked at

It is actually really common to have several monitors, at least one of which is vertical in order to have one dedicated "code-reading" screen. When I worked at a large investment bank, most technology people had this set-up, at least in my own experience/recollection. When the monitor is vertical, and you have one file of code that has a few thousand lines, it becomes much more practical to have 1/10th of the code in your view immediately, as opposed to 1/25th and needing to reconstruct the hierarchy of the application's codebase in your immediate mental memory