You can select and edit parts of one or more regions using the Marquee tool or the marquee ruler:
Marquee tool: Use to select and edit region parts by dragging across them. The Marquee tool looks like a crosshair.
Marquee ruler: A thin strip shown at the bottom of the ruler that you can use to make marquee selections.
Only the part of the region inside the marquee is selected, letting you select inside, or across portions of, regions. You can perform most edits, such as moving, cutting, copying, and deleting, in the selected area. After editing, the selected area becomes a new, separate region. The marquee selection uses the current Tracks area Snap value.
If you play a project after making a marquee selection, playback starts at the left edge of the selection, and ends at the right edge. If you create a marquee selection while the project is playing, playback continues past the end of the selection.
If you start recording after making a marquee selection, Autopunch mode is activated, and the marquee selection is replaced by the punch locators. All tracks within the marquee selection are record-enabled, and all other tracks are record-disabled.
In Logic Pro, select the Marquee tool, then drag in the Tracks area to select parts of one or more regions.
In Logic Pro, choose View > Marquee Ruler from the Tracks area menu bar.
The marquee ruler appears along the bottom of the ruler.
Drag in the selection area in the marquee ruler to select parts of one or more regions (also shown on selected tracks).
In Logic Pro, Shift-click the track header of each track you want to remove.
In Logic Pro, do one of the following:
Using the Marquee tool:
Press and hold Shift, then click in the Tracks area to change the selection in any direction.
Shift-click inside a selection to move the selection end closest to the pointer.
Option-Shift-click inside a selection to move the selection end farther from the pointer.
Using any marquee selection:
Press and hold Shift while using the Left Arrow key or Right Arrow key to move the marquee start point.
You can also use the Toggle Previous Region/Cell/Event or Move Marquee Start to Previous Transient key commands, depending on the type of region selected.
Use the Left Arrow key or Right Arrow key to change the selection end points.
You can also use the Select Previous Region/Cell/Event or Move Marquee End to Previous Transient key commands, depending on the type of region selected.
Press Shift-Home (the default assignment for the Select First, or Shift Marquee Selection Left key command).
Press Shift-End (the default assignment for the Select Last, or Shift Marquee Selection Right key command).
In Logic Pro, press and hold Control and Shift while you make the selection.
This action snaps the selection to ticks or samples when editing MIDI or audio regions, depending on the current zoom level. See Snap items to the grid.
When the LCD is set to Custom, it displays the division value below the time signature. You can Change the LCD display mode.
In Logic Pro, start the selection using the pointer, then press and hold Control while you drag to make the selection.
This action snaps the marquee borders to the current division value as you drag, depending on the current zoom level. See Snap items to the grid.
In Logic Pro, Control-click the marquee ruler, then choose Set Locators by Selection and Enable Cycle from the shortcut menu.
This action sets the locators to the marquee selection boundaries, rather than the whole region.
In Logic Pro, Control-click the marquee ruler, then choose Split Regions/Events at Locators or Marquee Selection from the shortcut menu.
When you edit automation data that is spanned by a marquee selection, two automation points are automatically created at the left edge, and two at the right edge, of the selection. This lets you quickly define and create automation data by converting the marquee selection into automation points.