Undo
Undo the last edition operation.
Note: This button is disabled if no undo operation can be perform.

Redo
Redo the last edition operation.
Note: This button is disabled if no redo operation can be perform.

Exchange the left and right images in memory
Exchange the left image data with the right image data.

Resize the left and right images to half of their height
Quick way to reduce file size when the stereoscopic image is intended to be viewed with liquid crystal shuttle glasses in the interlaced display mode.  The aspect ratio is automatically adjusted so the correct displaying of the stereoscopic image is maintained.
Note: This button is disabled when the height of the left and right images already equals one.

Resize the left and right images to double of their height
Quick way to convert a stereoscopic image that contents only half of the horizontal scan lines to a full resolution stereoscopic image.  The aspect ratio is automatically adjusted so the correct displaying of the stereoscopic image is maintained.

Convert the left and right images to grayscale
Convert all colors present in the stereoscopic image to grayscales. This operation does not affect the wallpaper image. The formula used is Gray = 0.30*Red + 0.59*Green + 0.11*Blue.
Note: This button is disabled if the stereoscopic image is already in grayscale.

Merge with Background
Merge the stereoscopic image with the current active background. After this operation no transparency data remains in the stereoscopic image.
Note: This button is disabled if the stereoscopic image does not content any transparency data.

Delete Transparency Data
Delete all transparency data present in the stereoscopic image.
Note: This button is disabled if the stereoscopic image does not content any transparency data.

Align the left and right images
Align the stereoscopic image to the specified position.

Resize the left and right images
Resize the stereoscopic image to the specified size.

Crop the left and right images
Crop the stereoscopic image to the specified rectangle.

Flip horizontally the left and right images
Flip the stereoscopic image horizontally.
Note: Normally after this operation you also need to exchange the left and right images.
Note: This button is disabled when the width of the stereoscopic image already equals one.

Flip vertically the left and right images
Flip the stereoscopic image vertically.
Note: This button is disabled when the height of the stereoscopic image already equals one.

Rotate the left and right images at any angle
Rotate the stereoscopic image at any angle.
Note: This operation with certain angle values may void the stereoscopic effect.