anchor.diff:  	
       !whether to do multimodal sampling
   	logical nest_mmodal 
  - 	parameter(nest_mmodal=.false.)
  + 	parameter(nest_mmodal=.true.)
   	
       !sample with constant efficiency
       ! If ceff is set to True, then the enlargement factor of the 
  
positive.code:     integer, allocatable, dimension(:) :: observ
      real(kind=8), allocatable, dimension(:) :: ss, alpha, tau
      real(kind=8), allocatable, dimension(:) :: vel, dist, sigma
      real(kind=8), allocatable, dimension(:,:) :: covmat, inv_covmat
  
      integer nest_context
  
negative.code:     !initialize MPI routines?, relevant only if compiling with MPI
  	!set to False if you want your main program to handle MPI initialization
      logical nest_initMPI
      parameter(nest_initMPI=.false.)
        
      !points with loglike < nest_logZero will be ignored by MultiNest
      double precision nest_logZero
  