A brief contains an initial definition statement of the design aim and defines any constraints?

True

Explanation:

A Brief often referred to as a design brief is a document often prepared by the project owner or in consultation with the professional consultants to describe the summary of what the project entails, including the limitations and final outcome of the project.

For example, it spells out the goals of the project, budget and schedule, scope of the project, and others.

Hence, it is TRUE that "A brief contains an initial definition statement of the design aim and defines any constraints"