**NOT YET IMPLEMENTED**
This box contains an expression which will be disallowed as an answer. Students entering an answers which matches this will be prevented from receiving any grade for the question even if the response would match a given answer for the question.
The purpose behind this is to allow for simple algebraic manipulation questions. For example, expand the expression (x+y+z)2. If the student simply copies the expression in the question into the answer box then both the SAGE and Evaluate comparison algorithms would match and the student given a correct response. With such a question the expression (x+y+z)2 should be entered into the disallowed answer box and then a simple comparison will be performed between student responses and the expression. Responses which match will be rejected.
The comparison method used will be Equivalent if Evaluate is selected as the main algorithm and Simple SAGE if SAGE is selected as the main comparison algorithm.