Procedure words or prowords are words or phrases limited to radio telephone procedure used to facilitate communication by conveying information in a condensed standard verbal format. Prowords are voice versions of the much older prosigns for Morse code first developed in the 1860s for Morse telegraphy, and their meaning is identical. The NATO communications manual ACP-125 contains the most formal and perhaps earliest modern glossary of procedure words, but its definitions have been adopted by many other organizations, including the United Nations Development Programme, the U.S. Coast Guard, the Rhode Island Department of Emergency Management, Civil Air Patrol, Military Auxiliary Radio System, and others. Procedure words are one of several structured parts of radio voice procedures, including Brevity codes and Plain language radio checks.

Read more in the app

Roger Federer and Wife Mirka Federer's Relationship Timeline

Laura Luhn Files New Lawsuit Against Fox News Claiming Sexual Abuse, Blackmail By Roger Ailes

Roger Deakins on Receiving His 16th Oscar Nomination for ‘Empire of Light’: ‘I’m Glad to Be Representing the Movie’

Roger Federer looks dapper in a grey suit at Chanel's Paris Fashion Week show

Roger Deakins Set for Career Honors at American Cinematheque’s Tribute to the Crafts

Director Roger Ross Williams ‘Stalked’ Gael García Bernal for Sundance Gay Wrestler Drama ‘Cassandro’

Michaela Coel, Penélope Cruz, Dua Lipa, and Roger Federer to Co-chair Met Gala

Dua Lipa, Michaela Coel, Penélope Cruz and Roger Federer to Co-Chair 2023 Met Gala

Stephen Colbert Boards Series Adaptation Of Roger Zelanzny’s Sci-Fi Novels ‘The Chronicles Of Amber’

‘Break Point’ Is an Excellent Tennis Documentary for the Post-Serena, Post-Roger Era: TV Review

Chicken heiress Jess Ingham welcomes a baby boy with her second husband Roger Zraika

Sam Mendes Pays Tribute To Conrad Hall & Roger Deakins At Camerimage Opening Ceremony: “Cinematographers Have Always Been My Guide”

Roger Sexton, ‘Survivor: The Amazon’ Contestant, Dead at 76

Survivor Contestant Roger Sexton Has Passed Away

Survivor Alum Roger Sexton Dead at 76

Roger Sexton Dies: ‘Survivor: The Amazon’ Contestant Was 76

Survivor’s Roger Sexton Dies at 76 After Battling Dementia

Survivor contestant Roger Sexton dies at 76 following a long struggle with Lewy body dementia

'Survivor' Contestant Roger Sexton Dead at 76

Ledisi & Roger Cross Fake An Engagement in Hallmark's 'All Saints Christmas'