2.1.1213 Part 1 Section 20.1.2.2.31, picLocks (Picture Locks)
a. The standard references only connection shapes as a part of the picLocks element attribute descriptions for the AG_Locking attribute group.
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In Office, AG_Locking attribute group attributes also applies to shapes and pictures.
b. The standard uses a shared attribute group for the locking attributes of shapes, pictures and other graphic objects.
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Office ignores attributes noChangeArrowheads, noChageShapeType, noEditPoints and noRot when applied to a picture object. Additionally, PowerPoint ignores noAdjustHandles and Word ignores noMove and noResize when applied to a picture object.