** Once the message has been received, the router checks the validity of the Open message.

** Once Upon a Honeymoon-Stephen Dunn

** Once More, My Darling-Leslie I. Carey

** Once Upon a Time in China ( 1991 ), starring Jet Li.

** Once and Again – ABC

** Once Upon a Mattress – Book by Jay Thompson, Marshall Barer, and Dean Fuller.

** Once on This Island – Book / lyrics by Lynn Ahrens, music by Stephen Flaherty

** Once Upon a Mattress

** Once in a Lifetime

** Cadillac Records-Ian Dench ; James Dring ; Amanda Ghost ; Beyoncé Knowles ; Scott McFarnon ; Jody Street-For the song " Once In A Lifetime "

** Jorge Calandrelli, " For Once in My Life " performed by Tony Bennett and Stevie Wonder

** Once a queen is played on a playing pile it causes that pile to be dead and it is removed from the immediate playing area until enough cards are collected to be able to shuffle them and return them to the draw pile

** No. 1, Wie einst in schöner ’ n tagen ( Once in Fairer Days )

** Once everyone has processed in, the Exsultet is intoned.

** New Earth: Once had an atmosphere of hydrogen sulphide.

** T. H. White quotes the final stanza of Poem XXVIII at the beginning of The Queen of Air and Darkness, part of his Once and Future King series.

** Once ( musical )

** Once railway station

** Once ( Buenos Aires Metro )

** Little Vigg's Christmas Eve, in the anthology, Australia Once a Month, translated by D. Conolly, 1885.

** Once Upon a Crime ( tpb, 192 pages, 2007, ISBN 1-4012-1315-4 ) collects:

** Stefan Sagmeister ( art director ) for Once in a Lifetime performed by Talking Heads

** The Once and Future Kane ( Non-fiction essay )

** Once Upon a Time in China ( Wong Fei Hung )

** Descendents-Two Things at Once

** Direct action

** " Rule 5: All scenes should begin and end with continuing action.

** Three-dimensional space of action ( 4 %) — Is the cut true to the physical / spatial relationships within the diegesis?

** List of female action heroes

** Utilitarianism, which holds that an action is right if it leads to the most happiness for the greatest number of people.

** State consequentialism or Mohist consequentialism, which holds that an action is right if it leads to state welfare, through order, material wealth, and population growth

** Egoism, the belief that the moral person is the self-interested person, holds that an action is right if it maximizes good for the self.

** Situation Ethics, which holds that the correct action is the one that creates the most loving result, and that love should always be our goal.

** Intellectualism, which dictates that the best action is the one that best fosters and promotes knowledge.

** Welfarism, which argues that the best action is the one that most increases economic well-being or welfare.

** Preference utilitarianism, which holds that the best action is the one that leads to the most overall preference satisfaction.

** Comedy of errors – a work that is light and often humorous or satirical in tone, in which the action usually features a series of comic instances of mistaken identity, and which typically culminates in a happy resolution of the thematic conflict.

** WWI: Action of 17 November 1917: United States Navy destroyers USS Fanning and USS Nicholson capture Imperial German Navy U-boat SM U-58 off the south-west coast of Ireland, the first combat action in which U. S. ships take a submarine ( which is then scuttled ).

** Hedd Wyn, Welsh poet ( killed in action ) ( b. 1887 )

** Neil James Archibald Primrose, MP ( killed in action ) ( b. 1882 )

** WWII – Sonderaktion Krakau: Germans take action against scientists from the University of Kraków and other Kraków universities at the beginning of WWII.

** The Wilhelm Gustloff, with over 10, 000 mainly civilian Germans from Gotenhafen ( Gdynia ) in the Gdansk Bay, is sunk by three torpedoes from the Soviet submarine S-13 in the Baltic Sea ; up to 9, 400 are thought to have died – the greatest loss of life in a single ship sinking in war action in history.

** The first official large unit action of the Vietnam War took place when two companies of the ARVN 23d Division were ambushed by a well-organized Vietcong force of several hundred identified as the " 2d Liberation Battalion ".

** Frederick Fisher, Canadian VC recipient ( killed in action ) ( b. 1894 )

** Charles Sorley, British poet ( killed in action ) ( b. 1895 )

** Franz Josef Strauß, the West German defense minister, is relieved of his duties over the Spiegel scandal, due to his alleged involvement in police action against the magazine.

** Battle of Mañeru-Third Carlist War-In continued campaigning in Navarre, Spanish Republican General Domingo Moriones meets a Carlist force under Nicolás Ollo at Mañeru, near Puente de la Reina, in a hard-fought but indecisive action.

** Marcus Aurelius, a Spaniard like Trajan and Hadrian, is a stoical, disciple of Epictetus, and an energetic man of action.

** Switching action of electrical circuitry, including inductive loads such as relays, solenoids, or electric motors.

** Military operation, a military action ( usually in a military campaign ) using deployed forces