wizard hat = W = wizardly

wizard mode n.

[from rogue] A special access mode of a program or system, usually passworded, that permits some users godlike privileges. Generally not used for operating systems themselves (`root mode' or `wheel mode' would be used instead). This term is often used with respect to games that have editable state.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.