forms and shapes

“Forms and shapes” is a user-friendly term for non-“light”-related aspects of the depiction of things in photographs.

Most depictions of things in photographs have both non-“light”-related aspects and “light”-related aspects.

As per P2, if a photograph is to qualify for the TTG label, then (apart from the effects of the Allowable Changes linked in P2) forms and shapes in that photograph cannot be added, deleted, replaced, resized, moved, modified, blurred, or reshaped.