The left shift operator (<<) shifts the first operand the specified number of bits, modulo 32, to the left. Excess bits shifted off to the left are discarded. Zero bits are shifted in from the right.

The <line> element is an SVG basic shape used to create a line connecting two points.

The SVG script element allows to add scripts to an SVG document.

The slice() method returns a shallow copy of a portion of an array into a new array object selected from start to end (end not included) where start and end represent the index of items in that array. The original array will not be modified.

The findLastIndex() method returns the index of the first element in a typed array that satisfies the provided testing function. If no values satisfy the testing function, -1 is returned.

The reverse() method reverses an array in place. The first array element becomes the last, and the last array element becomes the first.

The at() method takes an integer value and returns the item at that index, allowing for positive and negative integers. Negative integers count back from the last item in the array.

The findIndex() method returns the index of the first element in an array that satisfies the provided testing function. If no elements satisfy the testing function, -1 is returned.

The some() method tests whether at least one element in the array passes the test implemented by the provided function. It returns true if, in the array, it finds an element for which the provided function returns true; otherwise it returns false. It doesn't modify the array.

The forEach() method executes a provided function once per array element. This method has the same algorithm as Array.prototype.forEach(). TypedArray is one of the typed array types here.