This is one example of many castles in the medieval time period. There were many parts to a castle. But, it depended on how the castle was built to recognize parts that did and did not appear on the castle built.
Like spray paint, these markers give off volatile organic compounds. Some of the most recently made permanent markers are made from recycled plastic.[citation needed] The permanent marker was invented in 1952 by Sidney Rosenthal.
History of Marker Pens. Marker pen is a pen that has a tip made of porous, pressed fibers (felt) and a reservoir of colored ink. This reservoir has a core of an absorbent material which carries the ink. One more necessary part of a marker is cap that prevents drying of ink in a nib.