The Latin Patriarch of Jerusalem still uses the ermine-lined winter cappa, because he is bound by the complex and unalterable rules of the status quo, an 1852 Ottoman firman which regulates the delicate relations between the various religious groups that care for the religious sites in the Holy Land.

By further describing it as a ritual, the author might be taken to suggest that it was also part of an ongoing practice governed by unalterable rules.

The millionaire had one unalterable rule.

Dildahl agreed to supply their needs in whatever style they desired, then, citing the unalterable rule of the house, he tendered to each a document for signature.

John Biggs, chairman of TIAA-CREF, the huge pension fund manager, called for "adoption of one unalterable rule: independent public audit firms should not be the auditors of any company for which they simultaneously provide other services; it's that simple."

Proprietors found themselves mercilessly hailed into court when they broke that one unalterable rule.

In 1922 Emily Post had called it an "unalterable rule" that the wedding be given always by the bride's parents, never by the groom or his parents.

All would take instructions in reading and writing; more importantly, they would be schooled in decorum, court convention, and the unalterable rules of precedence.