Akai MPC User Manual page 45

Switches
Switches are represented by "LEDs." If a function is active, its LED will be lit
red. To activate a function, click it. Any other LEDs in its set will be
automatically deactivated.
Buttons
Click a button to activate or deactivate its function. Buttons are red when they
are activated.
Envelope Displays
Click the respective "handle" of an envelope and drag into the desired
direction to change an envelope parameter.
Pencil and Select Box Icons
Clicking this icon will switch between Draw Mode (the Pencil Tool) and Select Mode
(the Select Box tool). When the grid is active (i.e., when you have clicked somewhere in
it), you can press your computer keyboard's 1 key to enter Draw Mode or 2 key to enter
Select Mode.
Draw Mode:
•
Click once on an empty square in the grid to place a note event in that square.
•
Double-click a note event to erase it.
Select Mode:
•
Click and drag the box over note events on the grid to highlight them.
•
Double-click an empty square in the grid to add a note event.
•
Double-click a note event to erase it.
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