anchor.diff:                  nspawn = 0
               end if
   
  -        else if (choose_double_elt_type <= Po_ + P_o ) then elttype
  +        else if (choose_double_elt_type <= Po_ + P_o ) then 
               !          _
               !         / \
               !    .____\./
  
positive.code:             end if
  
  
          else elttype
              
              !      __   __ 
              !    ./  \./  \.
  
negative.code: 
  
  
          endif 
  
  
  
  