You can name the links by providing a name, a bar (|) and then the hyperlink or pagename: PhpWiki home page - the front page
You can suppress linking to old-style references and URIs by preceding the word with a '!', e.g. NotLinkedAsWikiName, http://not.linked.to/
[1], [2], [3], [4] refer to remote references. Click EditLinks? on the edit form to enter URLs. These differ from the newer linking scheme; references are unique to a page.
Also, the old way of linking URL's is still supported: precede URLs with “http:”, “ftp:” or “mailto:” to create links automatically as in: http://c2.com/
URLs ending with .png, .gif, or .jpg are inlined if in square brackets, by themselves:
HTML Mark-Up Language
Don't bother
< and > are themselves
The & characters will not work
If you really must use HTML, your system administrator can enable this feature. Start each line with a bar (|). Note that this feature is disabled by default.