can a handler access the calling path?

[Ben Rubinstein]

ie, can a handler find out which handler/function called it; and which
called that one?

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