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 the AD/BC notation: The AD/BC notation was first proposed by the monk Dionysius Exiguus (Dennis the Little) in the year 525 CE. He used it to identify the years in the Easter tables that he prepared. He did not use the notation to date historical events. Dionysius implied, but never stated, that Jesus was born 25 December 1 BC..