diff --git a/cidre/pomace/ns/ns.h b/cidre/pomace/ns/ns.h
index 5b4f4e89..6e386f4e 100644
--- a/cidre/pomace/ns/ns.h
+++ b/cidre/pomace/ns/ns.h
@@ -62,6 +62,8 @@ Class NS_UUID;
 Class NS_VALUE;
 
 Class NS_FILE_MANAGER;
+Class NS_NOTIFICATION;
+Class NS_CODER;
 
 __attribute__((constructor))
 static void common_initializer(void)
@@ -99,6 +101,8 @@ static void common_initializer(void)
     NS_VALUE = [NSValue class];
     
     NS_FILE_MANAGER = [NSFileManager class];
+    NS_NOTIFICATION = [NSNotification class];
+    NS_CODER = [NSCoder class];
     
     initialized = 1;
   }
diff --git a/cidre/pomace/sc/sc.h b/cidre/pomace/sc/sc.h
index f663535c..e28eadbd 100644
--- a/cidre/pomace/sc/sc.h
+++ b/cidre/pomace/sc/sc.h
@@ -21,14 +21,11 @@ static void mtl_initializer(void)
 {
   static int initialized = 0;
   if (!initialized) {
-    if (@available(macOS 12.3, *)) {
-      SC_STREAM_CONFIGURATION = [SCStreamConfiguration class];
-      SC_CONTENT_FILTER = [SCContentFilter class];
-      SC_STREAM = [SCStream class];
-      SC_SHAREABLE_CONTENT = [SCShareableContent class];
-    } else {
-      // Fallback on earlier versions
-    }
+
+    SC_STREAM_CONFIGURATION = [SCStreamConfiguration class];
+    SC_CONTENT_FILTER = [SCContentFilter class];
+    SC_STREAM = [SCStream class];
+    SC_SHAREABLE_CONTENT = [SCShareableContent class];
 
     initialized = 1;
   }
diff --git a/cidre/src/ca/renderer.rs b/cidre/src/ca/renderer.rs
index 5f40478f..b435bc26 100644
--- a/cidre/src/ca/renderer.rs
+++ b/cidre/src/ca/renderer.rs
@@ -1,4 +1,4 @@
-use crate::{arc, cf, cv, define_cls, define_obj_type, ns, objc};
+use crate::{arc, ca, cf, cg, cv, define_cls, define_obj_type, mtl, ns, objc};
 
 define_obj_type!(OptionKey(ns::String));
 
@@ -24,7 +24,7 @@ impl Renderer {
         options: Option<&ns::Dictionary<OptionKey, ns::Id>>,
     ) -> &'ar Self;
 
-    #[objc::rar_retain]
+    #[objc::cls_rar_retain]
     pub fn with_mtl_texture(
         texture: &mtl::Texture,
         options: Option<&ns::Dictionary<OptionKey, ns::Id>>,
@@ -46,7 +46,7 @@ impl Renderer {
     #[objc::msg_send(beginFrameAtTime:timeStamp:)]
     pub fn begin_frame_at(&mut self, time_stamp: cf::TimeInterval, ts: Option<&cv::TimeStamp>);
 
-    #[objc::msg_send(updateBounds)]
+    #[objc::msg_send(updateBounds:)]
     pub fn update_bounds(&mut self, bounds: cg::Rect);
 
     #[objc::msg_send(addUpdateRect:)]
diff --git a/cidre/src/ns.rs b/cidre/src/ns.rs
index 6b75cc86..29a7161e 100644
--- a/cidre/src/ns.rs
+++ b/cidre/src/ns.rs
@@ -147,3 +147,10 @@ pub use path_utilities::temporary_directory;
 pub use path_utilities::user_name;
 pub use path_utilities::SearchPathDirectory;
 pub use path_utilities::SearchPathDomainMask;
+
+mod notification;
+pub use notification::Notification;
+pub use notification::NotificationName;
+
+mod coder;
+pub use coder::Coder;
diff --git a/cidre/src/ns/coder.rs b/cidre/src/ns/coder.rs
new file mode 100644
index 00000000..95180bb7
--- /dev/null
+++ b/cidre/src/ns/coder.rs
@@ -0,0 +1,38 @@
+use crate::{arc, define_obj_type, ns, objc};
+
+/// Describes the action an ns::Coder should take when it encounters decode failures (e.g. corrupt data)
+/// for non-TopLevel decodes.
+#[derive(Debug, Eq, PartialEq, Copy, Clone)]
+#[repr(isize)]
+pub enum DecodingFailurePolicy {
+    /// On decode failure, the ns::Coder will raise an exception internally
+    /// to propagate failure messages (and unwind the stack). This exception can be transformed
+    /// into an ns::Error via any of the TopLevel decode APIs.
+    RaiseException,
+
+    /// On decode failure, the NSCoder will capture the failure as an ns::Error,
+    /// and prevent further decodes (by returning 0 / None equivalent as appropriate).
+    /// Clients should consider using this policy if they know that all encoded objects behave correctly
+    /// in the presence of decode failures (e.g. they use fail_with_error to communicate decode failures
+    /// and don't raise exceptions for error propagation)
+    SetErrorAndReturn,
+}
+
+define_obj_type!(Coder(ns::Id), NS_CODER);
+impl Coder {}
+
+#[link(name = "ns", kind = "static")]
+extern "C" {
+    static NS_CODER: &'static objc::Class<Coder>;
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::ns;
+
+    #[test]
+    fn basics() {
+        let coder = ns::Coder::new();
+        println!("{coder:?}");
+    }
+}
diff --git a/cidre/src/ns/notification.rs b/cidre/src/ns/notification.rs
new file mode 100644
index 00000000..54ca7bd5
--- /dev/null
+++ b/cidre/src/ns/notification.rs
@@ -0,0 +1,48 @@
+use crate::{arc, define_cls, define_obj_type, ns, objc};
+
+define_obj_type!(NotificationName(ns::String));
+
+define_obj_type!(Notification(ns::Id));
+
+impl arc::A<Notification> {
+    #[objc::msg_send(initWithName:object:userInfo:)]
+    pub fn init_with_name(
+        self,
+        name: &ns::NotificationName,
+        object: Option<&ns::Id>,
+        user_info: Option<&ns::Dictionary<ns::Id, ns::Id>>,
+    ) -> arc::R<Notification>;
+
+    #[objc::msg_send(initWithCoder:)]
+    pub fn init_with_coder(self, coder: &ns::Coder) -> arc::R<Notification>;
+}
+
+impl Notification {
+    define_cls!(NS_NOTIFICATION);
+
+    #[objc::msg_send(name)]
+    pub fn name(&self) -> &ns::NotificationName;
+
+    #[objc::msg_send(object)]
+    pub fn id(&self) -> Option<&ns::Id>;
+
+    #[objc::msg_send(userInfo)]
+    pub fn user_info(&self) -> Option<&ns::Dictionary<ns::Id, ns::Id>>;
+
+    pub fn with_name(
+        name: &ns::NotificationName,
+        object: Option<&ns::Id>,
+        user_info: Option<&ns::Dictionary<ns::Id, ns::Id>>,
+    ) -> arc::R<Self> {
+        Self::alloc().init_with_name(name, object, user_info)
+    }
+
+    pub fn with_coder(coder: &ns::Coder) -> arc::R<Self> {
+        Self::alloc().init_with_coder(coder)
+    }
+}
+
+#[link(name = "ns", kind = "static")]
+extern "C" {
+    static NS_NOTIFICATION: &'static objc::Class<Notification>;
+}