question: public Bidi createLineBidi ( int lineStart , int lineLimit ) { AttributedString astr = new AttributedString ( "" ) ; Bidi newBidi = new Bidi ( astr . getIterator ( ) ) ; return bidiBase . setLine ( this , bidiBase , newBidi , newBidi . bidiBase , lineStart , lineLimit ) ; }
target:  Create a Bidi object representing the bidi information on a line of text within the paragraph represented by the current Bidi.  This call is not required if the entire paragraph fits on one line.