If you are allowed to edit pages in this Site, simply click on edit button at the bottom of the page. This will open an editor with a tool bar palette with options.
To create a link to a new page, use syntax: [[[new page name]]] or [[[new page name | text to display]]]. Follow the link (which should have a different colour if the page does not already exist) then create the new page and edit it!
There is also syntax: [[[category:page name]]]. It creates link with specified name inside a category name space, but displayed link is "page name".
To create a new page from scratch you need only to key in the new "page name" (without spaces) in the address bar of your browser after the …defintive-socionics.info/___ and hit enter. You will get a "create page" screen with an open link of the new page name.
Tip: The simplest way to add a page involves going to a specific category like articles and using the form where you simply need to enter the title. Don't worry you can always change the page title later if you make a mistake.
Although creating and editing pages is easy, there are a lot more options that allow creating powerful sites. Please visit Documentation pages to learn more.
Alternatively, start a new thread in the forum.
