SideTrack is a replacement driver for Apple PowerBook and iBook trackpads. With SideTrack installed your standard trackpad becomes a powerful multi-button scrolling mouse. Leave your external mouse at home and take full control over your trackpad: Vertical scrolling at left or right edge of pad. Horizontal scrolling at top or bottom edge of pad. Map hardware button to left or right click. Map trackpad taps to no action, left click, left click drag (with or without drag lock), or right click. Map trackpad corner taps to mouse buttons 1-6 or simulated keystrokes. Extensive control over accidental input filtering. SideTrack is multiuser aware and fully compatible with MacOS X fast user switching (FUS). Every user on your PowerBook can have different settings depending on their needs.