Unless marked otherwise, posts on this site may be re-published under a Creative Commons License permitting sharing with attribution. Attribution must provide a URL to this web site and must reference Brian Rogers as the author, except that, if the relevant post is by a guest author, that person must be referenced as the author. The copyrights of comments remain in the author of the comment.

For further information on the terms of the license and for help with the required attribution, click here. For permissions outside the scope of the license, please contact Brian by email at