There are some image processing terms that may not make sense to those unfamiliar with ImageMagick or Blitline.
Gravity defines where a selection should be placed within the context of an image.
For example: WestGravity would mean "left-align" the image
There are 10 different possible gravity settings:
During a composite operation (which overlays one image on top of another), there are many different ways the images can be combined together.
You can read more about them here: https://legacy.imagemagick.org/Usage/compose/
Generally you will normally just use the defaults.
Updated about 2 years ago