Non-anchored objects
Highlights images that are not anchored.
Anchoring images ensures that they are part of the reading order.
Non-anchored objects highlighting puts a magenta dashed stroke around all images that are not anchored to the text flow. This highlighting is on the GL - Non-Anchored layer and does not print.
The highlighting is easier to see at a glance than InDesign's anchor adornments and can be shared with others outside of InDesign more easily.