Donut RAPT  

↓ past
    donut 2.52 (by mb)
      |
      +----------------------+
      |                      |
      |                    donut R 2.45r1a (by INUYA)
      |                      |
      |                    donut R 2.52r0c-3 (by dai, JOBBY)
      |                      |
      |                    Donut RAPT [Donut R -modified by RAPT-] (by RAPT)
      |                      |
      |                      +------------------+
      |                      |                  |
      |                      |             Donut Rapt abs [Donut Rapt arranged by S]
    Donut P .4.0b            |                (by S)  (Site is Not Found)
       (by U.H.)           Donut L  ----- Donut L [en]
      |                      (by RAPT)        (by RAPT)
      |                      |
      |                   (Donut Q) ----- Donut Q Easy
    Donut P(unOfficial)      (by RAPT)        (by RAPT)
       (by minutes)
      |
    unDonut
       (by minit)
      |
    unDonut+
      |
    unDonut+mod
↓ present


    Donut 2.52Rapt #18                 Donut RAPT #18f
        ↓                                 ↓
    Donut (*R)++ 2.52#18               Donut RAPT [en]
       (by 某吉)                          (by RAPT)