diff --git a/src/main/scala/ch10/server.scala b/src/main/scala/ch10/server.scala
index cf98883..6a05a5a 100644
--- a/src/main/scala/ch10/server.scala
+++ b/src/main/scala/ch10/server.scala
@@ -7,7 +7,7 @@ import stdlib.malloc, string.{strncpy, strlen}
 import collection.mutable
 import concurrent.{Future, ExecutionContext}
 
-case class Request[T](
+case class Request[T]( // different than earlier chapters, type parameter T
     method: String,
     url: String,
     headers: Map[String, String],
@@ -39,7 +39,7 @@ case class AsyncRoute(
 object Server extends Parsing:
   import ch07.LibUVConstants.*, ch07.LibUV.*, HttpParser.*
 
-  given ec: ExecutionContext = EventLoop
+  given ec: ExecutionContext = EventLoop // this is ch10's EventLoop, different
   val loop = EventLoop.loop
   var serial = 1L
   override val requests = mutable.Map[Long, RequestState]()
diff --git a/src/main/scala/ch10/service.scala b/src/main/scala/ch10/service.scala
index 3a76450..19d5370 100644
--- a/src/main/scala/ch10/service.scala
+++ b/src/main/scala/ch10/service.scala
@@ -16,7 +16,7 @@ def libuvService: Unit =
     .get("/"): r =>
       OK(Map("message" -> s"got (routed) request $r"))
     .run(9999)
-  uv_run(EventLoop.loop, UV_RUN_DEFAULT)
+  uv_run(EventLoop.loop, UV_RUN_DEFAULT) // ch10's EventLoop, different than earlier chps.
   println("done")
 
 object ServiceHelpers: