Int 16 Fn AF25  - K3plus V6.00+ (api V2.0+) - Copy Into Extended Buffer    [K]

   AX = AF25h
   BX = 4B33h ('K3')
   CX = number of keystrokes to copy
   ES:SI -> buffer containing keystrokes

Return: CF clear if successful
   CF set on error (i.e. buffer full)
       CX = number of keystrokes NOT transferred
       ES:SI -> first keystroke not transferred

Note:  this function replaces the identical function AH=25h"K3"

See Also: AH=25h"K3",AX=AF20h,AX=AF4Dh,AX=AF50h,INT 2F/AX=D44Fh/BX=0001h