Undo: Removes the last action.

Redo: Restores the action for which you clicked Undo.

Mark Selection Start: Defines the start position for a selected region of the loaded video.

Mark Selection End: Defines the end position for a selected region of the loaded video.

Decrease Selection Start: Moves the start position for the selection to one second before the existing start position.

Decrease Selection End: Moves the end position for the selection to one second before the existing end position.

Increase Selection Start: Moves the start position for the selection to one second after the existing start position.

Increase Selection End: Moves the end position for the selection to one second after the existing end position.

Crop Selection: Deletes the portion of the currently loaded file that is NOT selected.

Delete Selection: Removes the portion of the file that you have selected.

�If the edit mode is Audio, only the audio content is deleted.
�If the edit mode is Video, only the video content is deleted.
�If the edit mode is Audio and Video, both the audio and video content is deleted.

Clear Selection: Clears the selection so there is no longer a selected region.

Copy Frame to Clipboard: Copies the selection to the clipboard so it can be pasted as needed.

Delete Frame: Deletes the current frame.

Trim Before Position: Deletes all content before the current position.

Trim After Position: Deletes all content after the current position.

�If the edit mode is Audio, only the audio content is deleted.
�If the edit mode is Video, only the video content is deleted.
�If the edit mode is Audio and Video, both the audio and video content is deleted.

Edit Modes

�Video and Audio: Causes all relevant operations to be applied to both the video and audio content of a loaded video file.
�Video Only: Causes all relevant operations to be applied to only the video content of a loaded video file.
�Audio Only: Causes all relevant operations to be applied to only the audio content of a loaded video file.