Internal commands in Quicksilver are essentially actions that don’t require a subject (direct object) defined by the user. Most tasks, such as “Force Catalog Rescan”, and some commands like “QS Preferences” are internal commands. The Clipboard plugin also adds a large number of internal commands so as you can see, they’re quite useful in some circumstances.

Writing your own interface for Quicksilver is surprisingly easy, especially if you have experience in Cocoa and Xcode. Having covered the basics about the QSPlugin key in the Info.plist, as well the as the fundamentals of writing Quicksilver actions using Xcode, we are ready to start in a completely new direction. The Quicksilver interface.