This page has several problems when displayed. I've tried both Safari and Firefox on a Mac Book and the result is really too bad. Also the rules are not all given: for instance the placement rules are not given. Instead there is a link to an external website ... where several diagrams are not displaying either. I suggest that this page is improved when possible.
This page has several problems when displayed. I've tried both Safari and Firefox on a Mac Book and the result is really too bad. Also the rules are not all given: for instance the placement rules are not given. Instead there is a link to an external website ... where several diagrams are not displaying either. I suggest that this page is improved when possible.