To remember the five writs, use the mnemonic "He Made Peter Quit Quickly":
\textbf{H}ebeas Corpus (produce the body), \textbf{M}andamus (we command), \textbf{P}rohibition (to forbid), \textbf{Q}uo Warranto (by what authority), \textbf{C}ertiorari (to be certified).