class type cgi_activation =object..end
Portage: In addition to defining a type, the following
      cgi_activation also defines a conversion function that allows
      to connect old scripts to the new infrastructure.  Renamed
      simply cgi as this is the main cgi-like abstraction.
method environment : Netcgi1_compat.Netcgi_env.cgi_environment
method request_method : request_method
method initial_arguments : (string * cgi_argument) list
method initial_argument : string -> cgi_argument
method initial_argument_value : ?default:string -> string -> string
method initial_multiple_argument : string -> cgi_argument list
method arguments : (string * cgi_argument) listMutability of arguments has been dropped.  We indeed believe
	that how to deal with arguments is the role of a higher level
	library, so it is unconvenient that they are mutable (force
	copying even if unecessary).  Netcgi.Argument has a few
	helper functions to help manipulating lists of immutable
	arguments.  Moreover, mutable arguments send the wrong message
	to the user (imagine one wants to keep a cache of args ->
	response) and unnecessarily complicate the interface.
It has type argument list as the name is redundant and
	  this is better suited for the Netcgi.query_string_spec
	  optional arguments.
method argument : string -> cgi_argument
method argument_value : ?default:string -> string -> string
method multiple_argument : string -> cgi_argument list
method set_arguments : ?fin:bool -> cgi_argument list -> unit
method update_argument : ?fin:bool -> cgi_argument -> unit
method update_multiple_argument : ?fin:bool -> cgi_argument list -> unit
method delete_argument : ?fin:bool -> string -> unit
method url : ?protocol:Netcgi1_compat.Netcgi_env.protocol ->
       ?with_authority:other_url_spec ->
       ?with_script_name:other_url_spec ->
       ?with_path_info:other_url_spec ->
       ?with_query_string:query_string_spec ->
       unit -> string
method output : Netchannels.trans_out_obj_channelout_channel for coherence with the
	  standard library --- this is also to avoid
	  cgi#output#output ...  which looks odd.method set_header : ?status:status ->
       ?content_type:string ->
       ?cache:cache_control ->
       ?filename:string ->
       ?language:string ->
       ?script_type:string ->
       ?style_type:string ->
       ?set_cookie:cgi_cookie list ->
       ?fields:(string * string list) list -> unit -> unitAdded ?content_length for user convenience and deprecated
	  ?set_cookie in favor of ?set_cookies for coherence
	  e.g. with ?fields.
method set_redirection_header : string -> unit
method finalize : unit -> unit