where is "answer" defined?

[Ben Rubinstein]

Is it built into the engine, or is it in Rev?  And if the latter, where
would I find it (I've found the "answer dialog" stack, but not the script).

TIA
 
  Ben Rubinstein               |  Email: benr_mc at cogapp.com
  Cognitive Applications Ltd   |  Phone: +44 (0)1273-821600
  http://www.cogapp.com        |  Fax  : +44 (0)1273-728866