It is a command issued when the petitioner request. In it the court asks its subordinate court, government, public body etc where they are obliged to do it under certain statutes.
Executive privilege is the right of the president of the United States and other members of the executive branch to maintain confidential communications.
Bye laws are those laws which are made by an organization or community for their proper working.
The definition of aforesaid is something that was talked about before already said, referred to or recited