the better alternative is to erase the whole buffer each time before you start drawing. that is a nice clean engine bay. what is the world's oldest sport? and the sun is coming through, oh, you fill my lungs with sweetness, and you fill my head with you. this company is one to watch as they are taking off quickly. we traveled all over for the first few years. please contact us for more information. they are intelligent and can easily get into your house and should your house be having overflowing garbage cans that is a reason enough for them to come in. 