Eraser-2nd task

Eraser is one of the important stationery that we usually use. According to the Wikipedia, an eraser or rubber is an article of stationery that is used for removing pencil and sometimes pen writings. Before eraser was found, white bread was used to erase the mark of graphite pencil and charcoal. This method is still sometimes used by modern charcoal artists. Now, we find eraser in the opposite end of pencil that we write with. Sometimes, pulverized pumice is blended into this type of eraser to make it abrasive. It is good for most erasing purposes, though it tends to smear and can damage the paper if used too heavily. It leaves eraser residue that must be brushed away. Some erasers do not erase well because they lack the flexibility to clear the paper of the pencil markings.