Creating new backgrounds and saving them for future recall

Place your image on a page, resize it if you wish and alter its transparency level (from the object pull down menu) and finally lock the object in place.

Go to File - Save as a Gallery Item - enter a filename and save the file.

Either on the same visit or later, click on the Gallery tab then My Content and on the pull down menu choose "Add to My Content".

Locate the file you just saved and it will be added as a background with the distinctive top right folded corner.