KMSquote: KMS 'back' command is a mouse button on empty space; twice as fast as menu

Quotation

For quick browsing:] Fast backtrack command. ... In KMS, the Back command is available as one of the buttons of the empty space mouse cursor. The user need only move the cursor to an empty area of the frame and click the Back button. Because there is usually abundant space on frames to "hit," invoking the Back command takes .7 seconds on average, compared with 1.5 seconds to click on a menu or a "close box." This small difference adds up since the Back command may be used several hundred times per hour. From the user's perspective, it is not just the time savings, but the reduced mental and physical effort.

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