array.part [method]

array.part( int from[, int max ] )

returns a new array starting from index from, with the max. size max

a = [ 5, 6, 7, 8 ];
a.part( 1, 2 ); // returns [6,7]
a.part( -5, 2 ); // returns [5]
a.part( 3 ); // returns [8]