subroutine user_search
c
c user signal search algorithm.
c the user can provide this routine user_search.f that,
c given an event, fills the common hec_search_inc
c following a user defined algorithm
c the default user algorithm is the dummy algorithm
c
      implicit none
c
c user signal search algorithm
c
c set default to the dummy algorithm
c
      call hec_search_0
c
      end