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GETTING STARTED CHP. 4
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 File tab of the
Preferences dialog). To clear the undo/redo history for the current file, go to the
Special menu, choose
Undo/Redo History, and choose Clear from the submenu.
Note:
A file’s undo/redo history is also automatically cleared
when you close the file or exit Sound Forge.
Clearing the Undo/Redo History for all open files
Sound Forge also allows you to simultaneously clear the undo/redo history for all open files. Once again,
however, you cannot undo any previous changes once these histories are deleted. To clear the undo/redo
history for all open files, go to the
Special menu, choose Undo/Redo History, and choose Clear All from the
submenu.
Selecting status formats
The status format determines how Sound Forge displays a file’s position and length information. The
following table briefly describes status formats that Sound Forge supports (hh=hours, mm=minutes,
ss=seconds, and ff=frames).
For more information, see SMPTE Timecode on page 269.
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
synchronizing with film
hh:mm:ss:ff
SMPTE EBU (25 fps, Video) SMPTE at 25 frames per second for
European Broadcasting Union
hh:mm:ss:ff
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
dropped frame numbers
hh:mm:ss:ff
SMPTE 30 (30 fps, Audio) SMPTE at 30 frames per second hh:mm:ss:ff