On Thursday, April 24, 2014 3:42:48 PM UTC-4, Vernon Brown wrote:
On these discussion groups and R.A.S in particular I keep seeing "=20"

Can some please explain the meaning?

I wondered the same thing so I Googled it and found the answer.

=20 is code for a normal space and =A0 is code for a space between words where the line can't break (a non-breaking space). For an example of the use of the latter, if I was to type something like "read this help article: https://productforums.google.com/d/topic/gmail/WCklpQTrJMk/discussion", the Forum editor puts a non-breaking space in place of the normal space after the ":". You can check the effect by changing the width of the window where you are reading this to try and make the word "article:" sit at the end of a line - it will instead wrap on to the next line along with the URL.