Figure 1. Become More Productive With Whidbey.
The Whidbey IDE has many innovations that make writing code as rich an experience as creating a Word document. The IDE tracks saved (green) and unsaved (yellow, not pictured) changes to your code with vertical bars on the left of the code window (1). It gives a lot of guidance when docking windows with floating boxes and directional arrows, so you'll know exactly where the docked window will land (2).