| error | Return an error page. |
| mime_type | Compute mime type from file extension. |
| pass | Pass on this match and defer to next. |
| redirect | Redirect to new url. |
| render | Send output to browser... |
| render_brew | Render template using brew. |
| render_json | Produce JSON from an R object... |
| Router | Router object. |
| route_matcher | Generate functions to match specified route. |
| route_re | Parse route (with parameters) into regular expression. |
| static_file | Send static file to browser, if present. |