If  an  error  in  a  message  is  not  discovered  until  the operator is some distance beyond the error, the operator may  make  the  correction  at  the  end  of  the  message. Let’s  assume  that  Key  is  communicating  with   Polk. During Key’s transmission, Key makes a mistake in the time group but the mistake is not discovered until near the end of the transmission. The procedure  Key would make to correct the mistake is: “Polk, THIS IS Key, TIME Zero Eight Two Four Zulu,  BREAK,  Request  Status  Deep  Dive,  BREAK, CORRECTION,  TIME  Zero  Eight  Two  Five  Zulu, OVER.” REPETITIONS When words are missed or cannot be determined, stations  may  request  repetitions  before  receipting  for obtaining repetitions are SAY AGAIN, ALL BEFORE, ALL AFTER, WORD BEFORE, WORD AFTER, and TO. For example, in the previous message from Key to Polk, assume that Polk missed the entire message after that portion of the message would be: “Key,  THIS  IS  Polk,  SAY  AGAIN  ALL  AFTER Request,  OVER.” Key would then reply: “THIS  IS  Key,  I  SAY  AGAIN  ALL  AFTER Request—Status Deep Dive, BREAK, OVER.” Upon satisfactory receipt, Polk would send: “THIS IS Polk, ROGER, OUT.” the   message.   The   prowords   most   often   used   for the word “Request.”  Polk's request for a repetition for This  same  procedure  applies  for  the  proword  ALL BEFORE. The repetition procedure is also used when a station requests that a particular word be repeated. This is done by  using  either  of  the  prowords  WORD  AFTER  or WORD  BEFORE.  For  example: “Key, THIS IS Polk, SAY AGAIN WORD AFTER Status, OVER.” Key then  replies: “THIS  IS  Key,  I  SAY  AGAIN  WORD  AFTER Status-Deep,   OVER.” The   WORD   BEFORE   procedure   would   be accomplished in the same way by simply substituting the  prowords. The use of the proword TO is as follows: “Key,  THIS  IS  Polk,  SAY  AGAIN  Request  TO Dive, OVER.” Key would then reply: “THIS   IS   Key,   I   SAY   AGAIN   Request   TO Dive—Request Status Deep Dive, OVER.” Upon satisfactory receipt, Polk would reply: “THIS IS Polk, ROGER, OUT.” An  important  rule  to  remember  is  that  when  you request  repetitions  in  the  heading  of  an  R/T  message containing  FROM,  TO,  INFO,  or  EXEMPT  addressees, the prowords are the key to the repetition procedures. Repetitions may be requested for all of that portion of the heading preceding or following a proword or that portion between any two prowords. For example,  Key sends the following message to Polk: “Polk,   THIS   IS   Key,   MESSAGE,   PRIORITY, TIME,  Zero  Eight  Zero  Nine  Three  Zero  Zulu, FROM Key, TO Polk, INFO Tecumseh, BREAK, Proceed  Naval  Underwater  Sound  Laboratories, Rendezvous   SAQAD,   I   SPELL,   Sierra,   Alfa, Quebec,   Alfa,   Delta,   SAQAD,   Representative, BREAK,   OVER.” Polk  misses  the  portion  of  the  message  before  the address  and  sends: “Key, THIS IS Polk, SAY AGAIN ALL BEFORE FROM,  OVER.” Key then  sends: “Polk, THIS IS Key, I SAY AGAIN ALL BEFORE FROM—Polk,   THIS   IS   Key,   MESSAGE, PRIORITY,  TIME,  Zero  Eight  Zero  Nine  Three Zero Zulu, OVER.” Upon understanding the missing portion, Polk sends: “Key, THIS IS Polk, ROGER, OUT.” This same procedure can be applied to all repetition prowords. An important point for you to remember is that requests for repetition must include those portions of the heading before, after, or between the applicable prowords. CANCELING  MESSAGES Before the ending proword OVER or OUT is sent, a station can cancel a message transmission by using the proword   DISREGARD   THIS   TRANSMISSION, OUT. For example, if  Key should  realize,  while  sending a message, that the message is being sent in error, Key would cancel the transmission as follows: 2-19