Edit Menu: Select

All 
Selects all of the audio in all of the tracks.

None 
Deselects all of the audio in all of the tracks.

Left at Playback Position 
When Audacity is playing or recording, sets the left boundary of a potential selection by moving the cursor to the current position of the green playback cursor (or red recording cursor). The selection can then be drawn by using "Right at Playback Position" (below).

Right at Playback Position 
When Audacity is playing or recording, sets the right boundary of the selection, thus drawing the selection from the cursor position to the current position of the green playback cursor (or red recording cursor). This is a quick way to mark a selection for future editing while playing or recording. It will usually be more convenient while playing or recording to use keyboard shortcuts ( by default, [ and ]  ) to set the left and right boundary respectively.

Track Start to Cursor 
Selects a region in the selected track(s) from the start of the track to the cursor position (or extends the current selection so that it starts from the start of the track).

Cursor to Track End 
Selects a region in the selected track(s) from the cursor position to the end of the track (or extends the current selection so that it ends at the end of the track).



In All Tracks 
Extends the current selection up and/or down into all tracks in the project.
 * [[image:EditSelectBefore.png|Before]]
 * [[image:EditSelectAllTracksAfter.png|After]]



In All Sync-Locked Tracks 
Extends the current selection up and/or down into all sync-locked tracks in the currently selected track group.
 * [[image:EditSelectBefore.png|Before]]
 * [[image:EditSelectSyncLockAfter.png|After]]

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