Object oriented graphics (Vector Graphics) are scalable but often need specialised viewers

SVG Short for Scalable Vector Graphics, a vector graphics file format that enables two-dimensional images to be displayed in XML pages on the Web. Vector images are created through text-based commands formatted to comply with XML specifications. In contrast to JPEG and GIF images on the Web, which are bitmapped and always remain a specified size, SVG images are scalable to the size of the viewing window and will adjust in size and resolution according to the window in which it is displayed.

Please turn to page 90 of your scholar notes and follow the tutorial to create the images shown there. If you want to learn more then try these tutorials.

You can view the saved SVG files with irfanview.