1.3.3 Sensory Characteristics
Create content that can be presented in different ways ( for example simpler layout ) without losing information or structure.

About

Ensure that all users are able to access sound, shape, size or visual location that provide instructions for understanding content. Some users with disabilities are not able to perceive shape or position of objects such as ("button to the right" or "round button"), they need additional information to be provided to clarify anything that is dependent on this kind of information.

Example:

Before Rectification

image with meaningless instructions.

After Rectification

image with clear instructions.