Prosigns are symbols which are created from two text characters, and are used as an abbreviation / signal.
WinMorse can handle prosigns by assigning a single text character to the dots and dashes of the prosign, in a Code-Map.
To use a prosign, simply put the text character at the location in the text where you would like the prosign to be.
The Default Code-Map has the following prosigns:
||End of Message
||Beginning of Message
||Over to You
||End of Communication
Any prosign, listed here or not, may be used by WinMorse by using the Code-Map Editor and assigning the prosign's Morse Code to an unused text character.