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94 Chapter 3 Mackie Control
Zoom Mode
Pressing the ZOOM button enables Zoom mode. The cursor buttons are then used to
change the vertical or horizontal zoom factor of the window with key focus.
In the Arrange window:
 OPTION and Cursor Up/Down changes the zoom factor of the selected track.
 OPTION and Cursor Left resets the zoom factor of the selected track.
 OPTION and Cursor Right resets the zoom factor of all tracks of the same class (audio,
MIDI, and so on) as the selected track.
Computer Cursor Key Emulation
To use the cursor buttons as a replacement for the computer keyboard cursor keys,
hold down the SHIFT key.
By pressing SHIFT and ZOOM, the cursor buttons enter Permanent Cursor Key mode—
they mimic the computer cursor keys without the need to hold down SHIFT. The ZOOM
button LED flashes when in this mode.
You can deactivate this mode by pressing the ZOOM button.
Jog/Scrub Wheel Zone
The Jog/Scrub Wheel and SCRUB button can be used to navigate through the project,
which is useful for a number of Transport tasks. Simply turn the dial to use it. The
following Scrub modes change the behavior of the Jog/Scrub Wheel.
 Scrub mode off: The Jog/Scrub Wheel moves the playhead.
 Scrub mode on: The Jog/Scrub Wheel performs scrubbing, which allows you to hear
the data of the selected (or solo-ed) tracks while scrolling/moving through the
project.
Audio tracks are normally played back at their original speed. If you would prefer to
hear them at double speed, choose Logic Pro > Preferences > Audio > Devices, and
set Maximum Scrub Speed to Double in the pop-up menu.
Note: You can also use the SCRUB button for Pause functionality.
 SHUTTLE mode (Scrub button LED flashing): the Jog/Scrub Wheel shuttles the
playhead—turning it increases or decreases the speed at which the playhead moves.