val section : Lwt_log_core.section

use Lwt_log.Section.set_level in order to debug

val compress_level : int Ocsigen_config.Custom.key
val buffer_size : int Ocsigen_config.Custom.key
type filter = [
| `Type of string option * string option
| `Extension of string
]
val mode : [ `All_but of filter list | `Only of filter list ] Ocsigen_server.Site.Config.key