# form2 - format countries by continent, pop. den.

BEGIN { FS = ":"
        printf("%-15s %-10s %10s %7s %12s\n",
            "CONTINENT", "COUNTRY", "POPULATION",
            "AREA", "POP. DEN.")
      }
      { if ($1 != prev) {
            print ""
            prev = $1
        } else
            $1 = ""
        printf("%-15s %-10s %7d %10d %10.1f\n",
            $1, $2, $3, $4, $5)
      }