How to use this site

The frame above is the menu. It is fully navigable as a single row but you can drag the menu border to see submenus if you wish.

Clicking on ...

• a link (whether it is in the menu or on a page) which is in italics loads the associated page into this frame.
• a non-italic link loads the associated page into the main frame.
• the bracketed number accompanying a menu entry loads the submenu of that entry.
• any symbol in any page loads a summary for that page into this frame.
• any symbol in any page loads the menu from which the page is normally called.
• the (?) at the left end of the top level menu displays this brief guide here.

For more detail explore the "Design" sub-menu which can be loaded by clicking on the "(4)" in the "Design" entry of the top level menu.