Now I've had a bit of time to really look at this I'm thinking that there isn't really a problem. I've sent numerous test messages and just cannot replicate the issue. I'm guessing that perhaps the client pasted directly from "Word" perhaps and that "did it". I just don't know. I have asked them but as yet had no reply.
Answering your question, the initial value was just ordinary text "Write you message here" (without the inverted commas).
If it turns out to be a real problem then I'll post back.
Thanks for your time and sorry to have wasted it.