Proword	Meaning
Acknowledge	Instruction to a station on a net to acknowledge that it has heard a message which may not have been specifically addressed to it.
All After / All Before	Used with reference to a catchword or phrase when requesting or giving repetitions or corrections.
All Stations	A call for all stations on a net.
Answer after	Instructing a newly joined station in which order he is to answer calls.
Call Sign	The group that follows is a call sign.
Cancel	Used when a sender wishes to cancel a message or transmission.
Correct	You are correct.
Difficult	Communication is workable only with difficulty. Care and extra measures are needed.
Fetch	Use in conjunction with an appointments title, to indicate to whom the caller wishes to speak with.
Figures	Used before groups of figures sent by digit, except in the case of Call Signs, Grid References, Time Checks and Date Time groups.
From	Used by relaying station to indicate the station originating the message.
From....To	Used to identify part of a message.
Grid	Used when giving a grid reference.
Hello	Used as an introduction in an initial call and also as a warning that a transmission is about to follow.
I Read Back	Used by receiving station to satisfy himself that he has received a transmission or portion of it correctly.
I Say Again	Used by a sender when making repetitions for emphasis.
I Spell	Used when spelling out a word or letter group.
Message	Offer of an unregistered message that needs to be written down.
Nothing Heard	Indication that no signals have been received from a particular station.
O.K.	Communications satisfactory for working
Origin	The group that follows is the date time group at which the message was originated.
Out	This is the end of my transmission. No reply is expected.
Over	This is the end of my transmission to you. A reply or acknowledgement is required. Go ahead and transmit.
Read Back	Order to a station to repeat back a message exactly as received.
Roger	I have received your last transmission satisfactorily.
Say Again or Repeat	Request for repetition of all or portions indicated of a message.
Send	You have permission to transmit your offered message.
Speaking	Used in conjunction with an appointment title to indicate who is speaking.
Time	The group that follows is the date time group.
Wait or Stand By	I must pause for up to five seconds before replying. No other station is to transmit during this period even if my set is not transmitting.
Wait Out	Your transmission is received, a further transmission on the same subject will follow later.
Wilco	Message received, understood and will be complied with.
Word after / Word Before	Used to identify part of a message.
Wrong, (I say again)	What has been said is wrong. The correct version is ......