When you insert an audio file in the Multitrack Editor, the file becomes a clip on the selected track. You can easily move clips to different tracks or timeline positions. You can also edit clips nondestructively, trimming their start and end points, crossfading them with other clips, and more.
To arrange clips in the Editor panel, you use the Move 
or Time Selection 
tools.
in
the toolbar, and then drag the clips. Or choose Clip > Nudge
Right or Nudge Left to move clips one pixel at a time. (If you zoom
in to see individual samples, nudging moves clips one sample at
a time.)To move clips with the Time Selection
tool , right‑click
and drag (similar to the Hybrid tool technique in previous versions).
You can also drag the clip header with any tool.
Snapping lets you quickly align clips with other clips. If snapping is enabled, both dragged clips and the current‑time indicator snap to selected items. While you drag a clip, a white line appears in the Editor panel when snapping points meet.
For more information, see Snap to loop beats and Snap to markers, rulers, frames, and zero crossings.
You can create two types of copied audio clips: reference copies that share source files and unique copies that have independent source files. The type of copy you choose depends upon the amount of available disk space and the nature of destructive editing you plan to perform in the Waveform Editor.
Reference copies consume no additional disk space, letting you simultaneously edit all instances by editing the original source file. (For example, you can add the Flanger effect to a source file in the Waveform Editor and automatically apply the effect to all 30 referenced copies in a session.)
Unique copies have a separate audio file on disk, allowing for separate editing of each version in the Waveform Editor. (For example, you can add destructive effects to the version in an introduction while leaving the version in a verse dry.)
To quickly copy a reference, press Ctrl + C (Windows) or Cmd + C (Mac OS). Alternatively, Alt-drag (Windows) or Option-drag (Mac OS) the clip header.
You can trim or extend audio clips to suit the needs of a mix. Because the Multitrack Editor is nondestructive, clip edits are impermanent; you can return to the original, unedited clip at any time. If you want to permanently edit an audio clip, however, you can quickly open the source file in the Waveform Editor. (See Comparing the Waveform and Multitrack editors.)
Selected Clips
Removes selected clips, shifting remaining clips on the same tracks.
Time Selection in Selected Clips
Removes the range from selected clips, splitting them if necessary.
Time Selection in All Tracks
Removes the range from all clips in the session.
Time Selection in Selected Track
Removes the range only from the currently highlighted track in the Editor panel.
In the Properties panel, you can quickly change multiple settings for selected audio clips. Clip settings for gain and mute are independent from similar track controls.
To change the clip name, type in the text box at the top of the panel.
Clip Color
Click the swatch to customize. A swatch with a red slash indicates that the clip is using the default color for the current Appearance preset. (See Change interface colors, brightness, and performance.)
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at the
top of the Editor panel.
appears.
.
, and
choose one of the following from the pop-up menu:
appears
on the clip.