The "/dir" page:
Show the files and subdirectories within a single directory of the
source tree.  Only files for a single check-in are shown if the ci=
query parameter is present.  If ci= is missing, the union of files
across all check-ins is shown.
Query parameters:
- ci=LABEL
 - Show only files in this check-in. Optional.
 - name=PATH
 - Directory to display. Optional. Top-level if missing
 - re=REGEXP
 - Show only files matching REGEXP
 - type=TYPE
 - TYPE=flat: use this display TYPE=tree: use the /tree display instead
 - noreadme
 - Do not attempt to display the README file.