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6.
Double-click the Cut operation in the Undo pane. The Cut and Trim/Crop operations are both undone in the waveform and moved
to the Redo pane.
Tip:
To quickly undo and redo operations in the Undo/Redo History window, double-click the operation.
Clearing the Undo/Redo History for the current file
Clearing the current file’s Undo/Redo History frees up disk space by deleting the file’s temporary undo/redo files. However, deleting
these temporary files prevents you from undoing changes made to the file since it was last saved (or beyond, if you have the Allow
Undo past Save check box enabled on the General tab of the Preferences dialog). To clear the undo/redo history for the current file, go
to the Edit menu and choose Clear Undo/Redo History.
Note:
A file’s undo/redo history is also automatically cleared when you close the file or exit the software.
Selecting status formats
The status format determines how a file’s position and length information is displayed. The following table briefly describes supported
status formats (hh=hours, mm=minutes, ss=seconds, and ff=frames). For more information, see SMPTE Timecode on page 339.
Format name Description Format
Samples Number of samples Numbered (starting with zero)
Time Hours, minutes, seconds, and milliseconds hh:mm:ss.sss
Seconds Seconds and fractions of seconds sssss.sss (to three decimal places)
Time & Frames Hours, minutes, seconds, and frames. hh:mm:ss.ff
Absolute Frames Frames and fractions of frames Numbered (starting with zero, to
three decimal places)
Measures & Beats Measures, beats, and quarter beats measures:beats.quarters
SMPTE Film Sync (24 fps) SMPTE at 24 frames per second for hh:mm:ss:ff
synchronizing with film
SMPTE EBU (25 fps, Video) SMPTE at 25 frames per second for hh:mm:ss:ff
European Broadcasting Union
SMPTE Non-Drop (29.97 fps, Video) SMPTE at 29.97 frames per second hh:mm:ss:ff
SMPTE Drop (29.97 fps, Video) SMPTE at 29.97 frames per second using hh:mm:ss:ff
dropped frame numbers
SMPTE 30 (30 fps, Audio) SMPTE at 30 frames per second hh:mm:ss:ff
Audio CD Time Hours, minutes, seconds, and frames with a hh:mm:ss:ff
frame rate of 75 frames per second for
creating disc-at-once CDs.
80 | CHAPTER 3