diff --git a/src/Debugger.ml b/src/Debugger.ml
index 2272b0d..c43bdf4 100644
--- a/src/Debugger.ml
+++ b/src/Debugger.ml
@@ -1,10 +1,9 @@
 include DebuggerSigs
 
 module Make () = struct
-  type 'a Effect.t +=
-    | Debug : Loctext.t -> unit Effect.t
-    | CallBegin : Loctext.t -> unit Effect.t
-    | CallEnd : Loctext.t -> unit Effect.t
+  type 'a Effect.t += Act : action -> unit Effect.t
+  
+  let act ?loc s = emit_loctext @@ Loctext.make ?loc s
 
   let emit_loctext t = Effect.perform @@ Debug t
   let emit ?loc s = emit_loctext @@ Loctext.make ?loc s
@@ -21,4 +20,6 @@ module Make () = struct
     Text.kmakef @@ fun t f ->
     trace_open_loctext (Range.locate_opt loc t);
     Fun.protect f ~finally:(fun () -> trace_close_loctext (Range.locate_opt loc t))
+
+  let run : act:(action -> unit) -> ('a ->
 end
diff --git a/src/DebuggerSigs.ml b/src/DebuggerSigs.ml
index 5bf4578..8848193 100644
--- a/src/DebuggerSigs.ml
+++ b/src/DebuggerSigs.ml
@@ -1,5 +1,13 @@
+module AttributeMap
+
+type entry =
+  | Event of Loctext.t * Map
+  | 
+  | Trace of [`Open | `Close] * Loctext.t
+
 module type S =
 sig
+  val log : entry -> unit
   val emit : ?loc:Range.t -> string -> unit
   val emitf : ?loc:Range.t -> ('a, Format.formatter, unit, unit) format4 -> 'a
   val trace : ?loc:Range.t -> string -> (unit -> 'a) -> 'a
diff --git a/src/Reporter.ml b/src/Reporter.ml
index 81653cb..6e4fe2b 100644
--- a/src/Reporter.ml
+++ b/src/Reporter.ml
@@ -3,7 +3,7 @@ open Bwd.Infix
 
 include ReporterSigs
 
-module Make (Message : Message) : S with module Message := Message =
+module Make (Message : Message) (*: S with module Message := Message*) =
 struct
 
   (* Backtraces *)
@@ -67,7 +67,7 @@ struct
 
   (* Algebraic effects *)
 
-  let run ?init_loc ?(init_backtrace=Emp) ~emit ~fatal f =
+  let run ?init_loc ?(init_backtrace=Emp) ?debug ~emit ~fatal f =
     Traces.run ~env:(init_loc, init_backtrace) @@ fun () ->
     Effect.Deep.match_with f () @@ handler ~emit ~fatal