Apple has released MainStage 1.0.1, an update to a part of the company's Logic Studio built for live performance. MainStage enables keyboardists, guitarists, and other musicians to perform with software instruments and effects through a full-screen interface designed specifically for the stage. The update improves stability, addresses minor usability issues, and adds options for saving parameter values when switching patches. The Cupertino-based company trademarked the term "MainStage" in Hong Kong earlier this month after the term appeared in an Apple press release describing the new software. Apple recommends the update for all MainStage 1.0 users, requiring Mac OS X 10.4.9 or later.