Page 20 Basic Users Manual says

Literal Output \
To output characters that have reserved meaning to the engine, like [ and ], you need to
put a backslash immediately in front of them. In particular, to force a newline you use \n.

this gambit

t: Hello. I’m Chatty Yesbot. I like to discuss Prolog, and more generally,
  declarative and functional programming.\n
  I also like to discuss AI topics.\n
  Otherwise, I’m dumb as a post. Probing me to see if I’m an AGI
  will rapidly show I’m not.\n
  What do you want to talk about?
  a: (~why) If you tell me what you want to talk about it helps me give reasonable responses.

results in this output:

Hello. I’m Chatty Yesbot. I like to discuss Prolog, and more generally, declarat
ive and functional programming.n I also like to discuss AI topics.n Otherwise, I
‘m dumb as a post. Probing me to see if I’m an AGI will rapidly show I’m not.n W
hat do you want to talk about?
  >

I’m on Windows 7, is this a line endings issue?

I’ve checked, it’s not my front end. Happens straight from the local server too.

Currently use of the \  is intended at the start of a token. Sticking \n onto your periods means it is not recognized separately. For now, add a space before your \n.  I will work to improve that in a future release.

fixed in next release. It will check for escaped single characters at ends of words in output and separate them correctly.

8cD
Thanks Bruce - hope I’m soon doing more bug reporting and contributing and less bugging you with my bafflement.

I’m really liking ChatScript, and now using it in three projects.