Message precedence
indicator attached to a message indicating its level of urgency
Message precedence is an indicator attached to a message indicating its level of urgency, and used in the exchange of radiograms in radiotelegraph and radiotelephony procedures. Email header fields can also provide a precedence flag.
Early telegraphic procedures
In the early days of telegraphy and radiotelegraphy, individual countries, and sometimes individual states, sometimes set their own regulations. For example, in the period around 1909, California required that "messages must, if practicable, be transmitted immediately on and in order of receipt; if not practicable, then in the following order:"
Messages from public agents of the State or of the United States on public business.
Messages for immediate publication in newspapers, and not for any secret use.
Message relating to sickness or death.
Other messages in the order of filing.
International regulation
Later in the development of telegraphy and radiotelegraphy, message precedence was nominally set by the International Telecommunication Union (ITU). Various ITU Regulations provide for the following priorities:
The U.S. Code of Federal Regulations, Title 47, has included the following priorities:
ETAT PRIORITE
FLASH EMERGENCY
IMMEDIATE EMERGENCY
PRIORITY EMERGENCY
URGENT
The current U.S. Title 47 specifies these precedence designators for radiograms:
CCEB military precedence
The Combined Communications Electronics Board (CCEB), a five-nation joint military communications-electronics organization (consisting of Australia, Canada, New Zealand, the United Kingdom, and the United States), uses the following message precedence designators, in descending order of importance:
FLASH (Z) is reserved for initial enemy contact messages or operational combat messages of extreme urgency. Brevity is mandatory.
This brief starts where responsible research should: with the source description of “Message precedence” as indicator attached to a message indicating its level of urgency. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as indicator attached to a message indicating its level of urgency. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 23, 2026. The linked authority identifier is Q6821795. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1909.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
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Three-step research path
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- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Message precedence” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.