14. The method of claim 13 , further comprising: producing a second candidate sub-word unit upon triggering the sub-word unit recognition by the handwriting recognition engine; and outputting the second candidate sub-word unit.
14. The method of claim 13 , further comprising: producing a second candidate sub-word unit upon triggering the sub-word unit recognition by the handwriting recognition engine; and outputting the second candidate sub-word unit. 15. The method of claim 14 , wherein outputting the second candidate sub-word unit comprises displaying the second candidate sub-word unit.