This variable determines the character that separates words in a page ID and that replaces characters not valid in a page ID.
_
The page ID is the component of the URL that specifies the page. For example, by default the link doesn't exist goes to the URL dokuwiki.org/doesn_t_exist. wiki:doesn_t_exist is the page ID. The default sepchar is '_', so the apostrophe and the space each appear as an '_' in the link.
By changing sepchar to another character, you can change the '_' to another character. The valid sepchar characters are those that are valid in a page ID: letters, digits, underscore (_), dash (-), and dot (.). The sepchar variable must contain exactly one character.
Be careful with this variable. By changing it you can make pages created under a previous sepchar inaccessible. When you create a new page, the page ID becomes the file name for the page. If you create pages with sepchar '_' and then later use sepchar '-', your links to those previously created pages will break because the links will change but the file names won't.
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 3.0 Unported