Background images

These images were written in response to questions such as:

• Click How to change a background Image into a watermark by altering the opacity?

backgroundimage

##GITHUB:https://github.com/itext/i7js-examples/blob/develop/src/main/java/com/itextpdf/samples/sandbox/images/BackgroundImage.java##

##GITHUB:https://github.com/itext/i7ns-samples/blob/develop/itext/itext.samples/itext/samples/sandbox/images/BackgroundImage.cs##

backgroundtransparent

##GITHUB:https://github.com/itext/i7js-examples/blob/develop/src/main/java/com/itextpdf/samples/sandbox/images/BackgroundTransparent.java##

##GITHUB:https://github.com/itext/i7ns-samples/blob/develop/itext/itext.samples/itext/samples/sandbox/images/BackgroundTransparent.cs##