Level Converter v0.2b
        0.4    0.5
   c  (glow, light), ,       $rpoint'.

   ,          0.4,    0.5

 :
1.     0.4,     oldlevel.
!!      ,   $rpoint',     .
2.   0.5   .     newlevel,     ,    0.4. 
3.  ,    .     ,   $rpoint'    0.5     0.4

