Look at also other topic groups, which I have done!
You can return to this topic group by using this menu and the link Table of topic groups in the top of the page.
Table of contents is an ordinary index page, which works also as the site map of mixed information technology pages. The purpose of the page table is to show as a table links, which are normally linked by dynamic menus on the top-left of the page. You can get an overview of the contents of the topic group, which you visit just now.