After you identify an individual segment of interest, choose the
  Traceback of Allocation menu item in the Memory Map pop-up menu.
  Traceback information can help you understand why your segment was
  created.  Viewing traceback is also a preliminary step to displaying
  application code.

  Traceback information consists of a partial segment definition (a
  segment definition without a cursor address) and the list of elements
  on the callstack at the moment your segment was created.  The element
  naming convention is:

     image name\module name\routine name\line number

  For example:

  traceback:     8:000BA800+00065C00=00120400 DECC$SHR (Image)
  00066EDE   DBG$HA_KERNEL
  00005864   CRL$MAIN_DB\CRL_LIBRARY\crl__initialize_libraries\%LINE 5592