Alow relief is
a. a flat stone used for grinding paint, particularly eye paint.
b. a flat-topped one-story structure with slanted walls serving as a tomb.
c. a sculpture no taller that 5 inches, carved in limestone.
d. a sculpture that extends only slightly away from the background.

cad, or computer-aided design and drafting (cadd), is a software for design and technical documentation, which is an automated process as opposed to the manual drawing of plans. this gives a person an advance in making plans as an architect in a short period of time. one who can render plans through this software will gain a skill that is better than one who makes plans manually. this is a skill some companies look for in an employee.