It maybe obvious but how do you link to a document that was previously uploaded to yoursite/wikka/uploads/WikaPage/mydocument.xxx. I would like to use a relative link and so avoid using [[http://yoursite/wikka/uploads/WikaPage/mydocument.xxx]].
Also, is there a way to link to a sharefolder document at files://mysharefolder/mydocument.xxx ?

@Christian,
Look at the examples for image links - the src attribute is a relative URL; you could use an analogous relative link to an uploaded file (the configuration defines a path where files are uploaded).
Unless your system is completely self-contained on a single machine and limited to users using that one machine, a file:// protocol file would not be possible (or rather, it would be possioble but not reachable by anyone not using that machine. (Possible exception is if you can set up a symbolic link to the actual location from within the webserver's docroot; possible on *nix, maybe on Win2K/XP but not nearly as easily. But then your link would be a normal http (relative) link, not a fiel protocol link.)

Is there any way of doing in page links? Links that link to a different spot on the page?

Adding anchors in Wikka is possible through embedded HTML (using double double-quotes):

""<a name="anchor" id="anchor">Here's some text</a>""

(replace "anchor" with something meaningful). Note that XHTML deprecates named anchors and requires id's instead. For backward compatibility, though, it is recommended to create anchors with both attributes (name and id) with the same value.

Internal Wikka links do not support anchors yet, so you'll need to use the complete URL, for example: [[http://wikka.jsnx.com/AddingLinks#anchor This is a link]]

You might also be interested in this user-contributed anchor action: http://wikka.jsnx.com/AnchorAction

Is it possible to disable CamelCase links in Wikka? I'd like to use the explicit links for page creation, as my content will make use of CamelCase words in a number of places where I do not want to create orphaned links.

Disabling automatic parsing of CamelCase links from the config file is currently not supported (it has been suggested as a feature for the next release). With the current version the only way to disable CamelCase links is to manually edit the formatter (formatters/wakka.php) by commenting out the following lines.

(332-336):

// wiki links!
else if (preg_match("/^[A-ZÄÖÜ]+[a-zßäöü]+[A-Z0-9ÄÖÜ][A-Za-z0-9ÄÖÜßäöü]*$/s", $thing))
{
return $wakka->Link($thing);
}

(375)

"\b([A-ZÄÖÜ]+[a-zßäöü]+[A-Z0-9ÄÖÜ][A-Za-z0-9ÄÖÜßäöü]*)\b|". # CamelWords

I found your engine over a feature comparision at http://www.wikiservice.at/gruender/wiki.cgi?WikiEngineVergleich
where it said you had Auto Word Linking, that means Words that are Titles of existing internal pages are automatically linked, wether CamelCase or not.
Is that true ?
I have difficulties finding this feature in the documentation.

If this is the information given on that site (which I personally don't know) it is not correct: please fix it.

Sorry, that was my mistake. It works only for CamelCase. The page in the gründerwiki is now corrected. Thanks for pointing it out!

When Wikka is an intranet it's useful to hyperlink to files on the network. Adding |file to this line in wikka.php does the trick:
elseif (preg_match("/^(http|https|ftp|file):\/\/([^\\s\"<>]+)$/", $tag))
Use [[file://C:\myfile.ext]]