question: final long logNodeStart ( long parentIndex , Move m , int alpha , int beta , int ply , int depth ) { bb . putInt ( 0 , ( int ) - 1 ) ; bb . putInt ( 4 , ( int ) parentIndex ) ; bb . putShort ( 8 , ( short ) ( m . from + ( m . to << 6 ) + ( m . promoteTo << 12 ) ) ) ; bb . putShort ( 10 , ( short ) alpha ) ; bb . putShort ( 12 , ( short ) beta ) ; bb . put ( 14 , ( byte ) ply ) ; bb . put ( 15 , ( byte ) depth ) ; try { bos . write ( bb . array ( ) ) ; } catch ( IOException e ) { throw new RuntimeException ( ) ; } return nextIndex ++ ; }
target:  Log information when entering a search node.