if { [info exists rel_tol] && $rel_tol > 0 } {
  puts "\nChecking triangulation area (triarea command)..."
  set rel_err [expr abs([CheckTriArea result $area_eps])]
  if { [info exists max_rel_tol_diff] && $max_rel_tol_diff > 0 } {
    checkreal "area difference" $rel_err $rel_tol $max_rel_tol_diff 0
  }
}

# to end a test script
puts "TEST COMPLETED"
