This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
My Curve for Horizontal Rectangular Channel. en February Transferred from org en transferred to Commons by User Premeditated Chaos using de php CommonsHelper br Original text Williamjkingston talk fullurl Special Listfiles Williamjkingston Uploads Williamjkingston talk fullurl Special Listfiles Williamjkingston Uploads