The change "Punctuation to Text" checkbox toggles the keyboard
punctuation marks to text in accordance with NTS MPG-SENDING
ON VOICE.
http://www.arrl.org/files/file/Public%20Service/MPG204A.pdf
While this is an IARU based Radiogram the
ARRL NTS procedures are applicable.
In an effort to keep things as simple as
possible the NTS has adopted the following standards for punctuation in
a formal radiogram: Period = X-Ray Question Mark = Query As these are
the most common punctuations and could be easily misconstrued as
something else ALL periods in a message are expressed as an "X" (spoken
"X-ray") and all question marks are spoken as the word "query" at the
end of the sentence. Other punctuation is permitted but in an effort to
keep the check to a minimum they are discouraged.
The documents states: "Remember that
punctuation, other than X for period, is always written out as a word
group and may be spelled if necessary.”
Original form credits to OE3VRW, Wolfgang Ruthner