How to restore Sublime 3 to the restore single-window mode?

Question

I am using Sublime 3 but I am a newbie. I was trying to define some preferences, like the font size. However, I messed up things and I am not being able to restore.

Answer 1

It looks like you added an extra column. Try going to View, then setting Layout to Single or use the keyboard shortcut: Shift+Alt+1.