Canvas Properties dialog box
Smart ClipArt Editor – canvas shortcut menu – Canvas Properties
Width
Specifies the width of the canvas in pixels.
Height
Specifies the height of the canvas in pixels.
Color
Click to open the Color Picker dialog box so you can specify the color of the canvas.
Transparent
If you select this, the canvas is made transparent. As a result, any “empty” areas within the bounding box of the image will be transparent on the Web page.