Complex sentence: Char cloth (or charcloth)--also called charpaper--is a swatch of fabric made from vegetable fiber (such as linen, cotton or jute) that has been converted via pyrolysis into a slow-burning fuel of very low ignition temperature.
Split into simpler sentences: Char cloth (or charcloth)--also called charpaper--is a material that is used in fire making. It is a swatch of fabric made from vegetable fiber (such as linen, cotton or jute) that has been converted via pyrolysis into a slow-burning fuel of very low ignition temperature.