.Delete lines skipping some lines.
      Use Bandle/Skip parameter on Delete line command.
      ex) d5,3.2 delete 3 lines,leave 2 lines,... ,repeat this 3 times.
          Bandle(,b)/Skip(.s) parameter is avail for all line cmd.
      This is convenient to edit data files.              Chapter(4)-(A)


     (repeat 3 times to delete 6 lines and leave 2 lines)
            ===>
            *******|********** TOP OF FILE *********************
            d3,6.2 *
            0000200*
            0001000|<AF[177]: Allocation Failure. need 104 bytes
            0002000|<AF[177]: managing allocation failure, actio
            0003000|<GC(177): GC cycle started Sun Feb  1 00:43:
            0004000|<GC(177): freed 1006748624 bytes, 94% free (
            0005000|  <GC(177): mark: 49 ms, sweep: 14 ms, compa
            0006000|  <GC(177): refs: soft 0 (age >= 32), weak 0
            0007000|<AF[177]: completed in 65 ms>
            0008000|
            0009000|<AF[178]: Allocation Failure. need 192 bytes
            0010000|<AF[178]: managing allocation failure, actio
            0011000|<GC(178): GC cycle started Sun Feb  1 01:31:
            0012000|<GC(178): freed 1006747392 bytes, 94% free (
            0013000|  <GC(178): mark: 53 ms, sweep: 16 ms, compa
            0014000|  <GC(178): refs: soft 0 (age >= 32), weak 0
            0015000|<AF[178]: completed in 70 ms>
            0016000|
            0017000|<AF[179]: Allocation Failure. need 176 bytes
            0018000|<AF[179]: managing allocation failure, actio
            0019000|<GC(179): GC cycle started Sun Feb  1 02:19:
            0020000|<GC(179): freed 1006729200 bytes, 94% free (
            0021000|  <GC(179): mark: 52 ms, sweep: 13 ms, compa
            0022000|  <GC(179): refs: soft 0 (age >= 32), weak 0
            0023000|<AF[179]: completed in 67 ms>
            0024000|
            0025000|<AF[180]: Allocation Failure. need 24 bytes,
            0026000|<AF[180]: managing allocation failure, actio
            0027000|<GC(180): GC cycle started Sun Feb  1 03:07:
            0028000|<GC(180): freed 1006536064 bytes, 94% free (
            0029000|  <GC(180): mark: 55 ms, sweep: 15 ms, compa
            0030000|  <GC(180): refs: soft 0 (age >= 32), weak 0
            0031000|<AF[180]: completed in 70 ms>