Work only on the necessary part of a code without being distracted by other functionality blocks! Collapse all the parts that you do not need at the moment, and concentrate on the actual feature development.
The Welkin Suite IDE automatically organizes your code into separate code blocks, separating it by methods, tags, etc., and gives you the ability to selectively hide the parts of code that you don't need right now. Also you can collapse multiline comments, if they visually interfere with your work. Afraid of getting lost in your complicated code? Hover your mouse over the collapsed section, and you will see a detailed tooltip.