diff --git a/src/lib.rs b/src/lib.rs
index 5e0ae84..643d2eb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,9 +3,12 @@
 
 mod ext; use ext::*;
 
+// Internal modules
 mod object;
 mod formats;
 
+// TODO: External modules/functions/types/whatever
+
 #[cfg(test)]
 mod tests {
     #[test]
diff --git a/src/object.rs b/src/object.rs
index bfe96e1..642bf64 100644
--- a/src/object.rs
+++ b/src/object.rs
@@ -1,4 +1,5 @@
 use super::*;
+use std::io;
 use smallbox::{
     SmallBox,
     space,
@@ -7,9 +8,10 @@ use smallbox::{
 
 type OwnedObjectStackSize = space::S4;
 
-/// An object that can be expose serialise+deserialise methods
-pub trait Object{
-    // TODO
+/// An object that can be expose serialise+deserialise methods polymorphically.
+pub trait Object {
+    fn to_writer(&self, to: &mut dyn io::Write) -> io::Result<usize>;
+    fn from_reader(&mut self, from: &mut dyn io::Read) -> io::Result<usize>; //ugh, this SUUUCKS...
 }
 
 /// A polymorphic `Object` that is owned.