====== Insert ======
Insert places one image, the "insert" image, inside another, the "input" image. Connect them to **input_link** and **insert_link**.

Choose the "location": the **center** of the input image, one of its four corners (**upper left**, **upper right**, **lower left** or **lower right**), or **arbitrary**. For arbitrary, enter the "corner": the x, y position where the insert image's upper-left corner goes. No part of the insert image may fall outside the input image.

The insert image cannot be larger than the input image. Both images must have the same number of bands, the same number of bits and the same data type.