diff --git a/src/kernel/synch.rs b/src/kernel/synch.rs
index d4e349c..e7b9ac2 100644
--- a/src/kernel/synch.rs
+++ b/src/kernel/synch.rs
@@ -12,13 +12,16 @@ use super::thread_manager::ThreadManager;
 ///     Structure of a Semaphore used for synchronisation
 pub struct Semaphore {
 
+    /// Counter of simultanous Semaphore
     counter:i32,
+    /// QUeue of Semaphore waiting to be exucated
     waiting_queue:List<Rc<RefCell<Thread>>>,
-    thread_manager: Rc<RefCell<ThreadManager>> // On s'assure que le tm vit plus longtemps que les semaphore avec le lifetime
+    /// Thread manager which managing threads
+    thread_manager: Rc<RefCell<ThreadManager>>
 
 }
 
-impl<'t> Semaphore {
+impl Semaphore {
 
     ///     Decrement the value, and wait if it becomes < 0. Checking the
     ///	value and decrementing must be done atomically, so we
@@ -65,9 +68,13 @@ impl<'t> Semaphore {
 /// It's used for critical parts
 pub struct Lock{
 
+    /// Thread owning the lock
     owner: Rc<RefCell<Thread>>,
+    /// The queue of threads waiting for execution
     waiting_queue:List<Rc<RefCell<Thread>>>,
+    /// Thread manager which managing threads
     thread_manager: Rc<RefCell<ThreadManager>>,
+    /// A boolean definig if the lock is free or not
     free: bool
 
 }
@@ -131,7 +138,9 @@ impl Lock {
 /// Structure of a condition used for synchronisation
 pub struct Condition{
 
+    /// The queue of threads waiting for execution
     waiting_queue:List<Rc<RefCell<Thread>>>,
+    /// Thread manager which managing threads
     thread_manager: Rc<RefCell<ThreadManager>>,
     
 }