I've a set of 508 digital rectangular images. They are the pages of an ancient Tamil dictionary & the basis for a collection of subrectangles. Each #subrectangle is defined by a pair, consisting of a #BASEimage & a #quadruplet (X1, Y1, W, H), where (X1,Y1) is the #UpperLeftCorner, W the width & H the right of the subrectangle. Number of pairs in my #XMLdataBase has today crossed 10,055. I should probably use a better format than "#background-image ...", possibly #SVG & would appreciate #advice.