The key features of a codified constitution are:
1. Authoritative - A constitution is perceived as a law that is higher than regular legislation.
2. Entrenched - This type of constitution is called entrenched, which means that amending or abolishing it is a very difficult thing to do.
3. Judiciable - Since the constitution is a higher law, other laws can be judged against it, thus it can be seen if they are constitutional.
