Sometimes an otherwise useful application is missing a feature or two. Take the Stickies app, for example. For whatever reason, the authors decided not to include a scrollbar. Perhaps this was because it’s not a necessary feature for most users. Perhaps it was just overlooked.

Thankfully, you can customize most OS X apps with the tools that come with the Xcode dev suite. This article will give you the means to do just that so get ready to HACK.