A common error among novice scenery artists, where the moon, often in its crescent phase, is depicted as having stars inside its (obscured) radius (rather than being drawn as a spherical celestial body, like the artist in post #2861745 correctly did).
Sometimes also used as an artistic choice.
Do not use this tag if the moon is depicted as an object rather than a satellite in space (for example, if a character is sitting inside the crescent moon).
Correct use of this tag: post #2876397