Security
* manage url encoding: The filename fetched on disk may differ from that was asked by URL.
* check /etc/passwd not accessible: Perform sanity checks against unauthorized access.
* Check unicode capability, UTF16 input, etc…
* Manage different type of carriage return: CR CR/LF LF

Development
* Command line API for script and testing.

User interface
* Page menu on upper and lower sides: [parent dir] [root dir] [raw text]
* Images
* Text localisation