Method 1: From main menu choose Label/Set Background Picture.
Method 2: Right-click anywhere on working area and choose Side/Set Background Picture.
Method 3: Right-click at picture object and choose Picture/Set As Background.
Method 1: From main menu choose Label/Clear Background Picture.
Method 2: Right-click anywhere on working area and choose Side/Clear Background Picture.
Note: Document must be open and active.
See also: