Images are more than a thousand words. That is why we created intuitive ways of handling them.
Contain & Cover
You can insert an image or fill a shape with a picture. When you insert an image it stretches to its full size, that is, if an image has a width of 10 and its container has 20, the image will fill up its size of 10 and leave the extra 10 space. By doing this the image is said to be contained.
While this can work in most events you may want to fill the shape with the entire image.
When the image covers the entire shape you can adjust its position, i.e you can set it show its different positions such as left, right, centre etc
Patterns
When an image is contained you can repeat it by clicking the pattern button.