diff --git a/src/entt/core/ident.hpp b/src/entt/core/ident.hpp
index 87330a206..51298ef0c 100644
--- a/src/entt/core/ident.hpp
+++ b/src/entt/core/ident.hpp
@@ -10,7 +10,7 @@
 namespace entt {
 
 
-namespace details {
+namespace {
 
 
 template<typename... Types>
@@ -87,7 +87,7 @@ private:
  * @tparam Types List of types for which to generate identifiers.
  */
 template<typename... Types>
-constexpr auto ident = details::Identifier<std::decay_t<Types>...>{std::make_index_sequence<sizeof...(Types)>{}};
+constexpr auto ident = Identifier<std::decay_t<Types>...>{std::make_index_sequence<sizeof...(Types)>{}};
 
 
 }
diff --git a/src/entt/process/scheduler.hpp b/src/entt/process/scheduler.hpp
index 13d3ccae6..6e860cf53 100644
--- a/src/entt/process/scheduler.hpp
+++ b/src/entt/process/scheduler.hpp
@@ -43,7 +43,7 @@ namespace entt {
 template<typename Delta>
 class Scheduler final {
     template<typename T>
-    struct tag { using type = T; };
+    struct type_t { using type = T; };
 
     struct ProcessHandler final {
         using instance_type = std::unique_ptr<void, void(*)(void *)>;
@@ -66,7 +66,7 @@ class Scheduler final {
         template<typename Proc, typename... Args>
         decltype(auto) then(Args &&... args) && {
             static_assert(std::is_base_of<Process<Proc, Delta>, Proc>::value, "!");
-            handler = Lambda::operator()(handler, tag<Proc>{}, std::forward<Args>(args)...);
+            handler = Lambda::operator()(handler, type_t<Proc>{}, std::forward<Args>(args)...);
             return std::move(*this);
         }
 
diff --git a/src/entt/signal/sigh.hpp b/src/entt/signal/sigh.hpp
index 62753e7fd..44318753f 100644
--- a/src/entt/signal/sigh.hpp
+++ b/src/entt/signal/sigh.hpp
@@ -10,7 +10,7 @@
 namespace entt {
 
 
-namespace details {
+namespace {
 
 
 template<typename, typename>
@@ -83,7 +83,7 @@ using DefaultCollectorType = typename DefaultCollector<Function>::collector_type
  * @tparam Function A valid function type.
  * @tparam Collector Type of collector to use, if any.
  */
-template<typename Function, typename Collector = details::DefaultCollectorType<Function>>
+template<typename Function, typename Collector = DefaultCollectorType<Function>>
 class SigH;
 
 
@@ -111,8 +111,8 @@ class SigH;
  * @tparam Collector Type of collector to use, if any.
  */
 template<typename Ret, typename... Args, typename Collector>
-class SigH<Ret(Args...), Collector> final: private details::Invoker<Ret(Args...), Collector> {
-    using call_type = typename details::Invoker<Ret(Args...), Collector>::call_type;
+class SigH<Ret(Args...), Collector> final: private Invoker<Ret(Args...), Collector> {
+    using call_type = typename Invoker<Ret(Args...), Collector>::call_type;
 
 public:
     /*! @brief Unsigned integer type. */
@@ -139,6 +139,7 @@ public:
     * to the users of a class.
     */
     class Sink final {
+        /*! @brief A signal is allowed to create sinks. */
         friend class SigH;
 
         template<Ret(*Function)(Args...)>
diff --git a/src/entt/signal/signal.hpp b/src/entt/signal/signal.hpp
index 26e25bf22..c6485c1b9 100644
--- a/src/entt/signal/signal.hpp
+++ b/src/entt/signal/signal.hpp
@@ -63,6 +63,7 @@ public:
      * to the users of a class.
      */
     class Sink final {
+        /*! @brief A signal is allowed to create sinks. */
         friend class Signal;
 
         template<void(*Function)(Args...)>