nl_tokens: Basic array internal methods
pl_tokens: function arrayEach ( arr , fn , startIndex , loop ) { var length , index , i ; if ( startIndex < 0 ) startIndex = arr . length + startIndex ; i = isNaN ( startIndex ) ? 0 : startIndex ; length = loop === true ? arr . length + i : arr . length ; while ( i < length ) { index = i % arr . length ; if ( ! ( index in arr ) ) { return iterateOverSparseArray ( arr , fn , i , <mask> ) ; } else if ( fn . call ( arr , arr [ index ] , index , arr ) === false ) { break ; } i ++ ; } }