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To replace the background image select the option "Background Image";
Before you replace the default background image you will need to de-select the checkbox "Keep this field empty";
Once deselected you can then either supply a URL Path to where the background image is stored online, or select the "upload file" option, then use the Select file to point to a locally stored image that will be uploaded;
Once you have indicated the image that is to be used as a replacement background click on "SAVE".
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