O: Yupop  
         
\: ʮyЦؤoI(0,0)m@

m:  
  1 UԦ\      Yе  ->    -> ʭI
  2 uC              Y_yЦ  ->  ʭI

: Enter yФؤo/Osnap/?DU/I<0 0>:

1 Enter yФؤo -- yФؤoIsI (k) 

2 Osnap - ]wUHߦn (,,JI.....)

3 ?DU -- \ާ@
  
4 I<0 0> -- IsI,AyФؤo.NyЦؤoImאּsIm

 ps:  ʭIɦpoAjϮ,bjϤW]wI
          ubDϤWjܷN, |jϦ۰ʧsI  
