A shortly-worded and short-form, often truncated, Court order, such as Court's short, succinct hand-written direction, with initials.
Also an endorsement of an official; a prerequisite in some rare cases to the institution of legal prceedings or for the obtaining of some legal right.
Latin term for "let it be done".
A fiat can be a hand-written and initialled note from a judge directing that some action occur or even an endorsement of another document.
A fiat signed by a judge, notwithstanding its shortcomings as per form, is no less binding than a Court order in regular form.