diff --git a/Project_Model/Libs/BPE/Classes/NanoSocratesBPE.py b/Project_Model/Libs/BPE/Classes/NanoSocratesBPE.py
index 6428cb7..132217e 100644
--- a/Project_Model/Libs/BPE/Classes/NanoSocratesBPE.py
+++ b/Project_Model/Libs/BPE/Classes/NanoSocratesBPE.py
@@ -4,12 +4,15 @@ from ..Errors import OutOfDictionaryException, DuplicateWordException
 
 
 class NanoSocratesBatchMemoryBPE:
+    """ Memory to batch training. Keeps token couple frequencies, and merge_treshold 
+    """
 
     def __init__(
         self,
         frequencies: dict[tuple[int, int], int],
         merge_treshold: int
     ) -> None:
+        
         self.frequencies = frequencies
         self.merge_treshold = merge_treshold
 
@@ -42,7 +45,12 @@ class NanoSocratesBPE(Encoder):
         return self.__vocabulary
 
     @property
-    def __next_id(self):
+    def __next_id(self) -> int:
+        """
+        Gets the next it
+        Returns:
+            int:
+        """
         return self.vocabulary_size + 1
 
     # TODO: implement fit
@@ -90,20 +98,26 @@ class NanoSocratesBPE(Encoder):
 
 
     def encode(self, piece: str) -> list[int]:
+        """Encode a String into token IDs, it firt convert it into utf-8, then pass the list of integer to encode_intermediate()
+        Args:
+            piece (str):
+        Returns:
+            list[int]:
+        """
+        converted_piece = list(piece.encode("utf-8"))
+        return self.encode_intermediate(converted_piece)
 
-        current_piece = list(piece.encode("utf-8"))
-        new_piece = self.__round_encode(current_piece)
-
-        while len(current_piece) != len(new_piece):
-            current_piece = new_piece
-            new_piece = self.__round_encode(current_piece)
-
-        return current_piece
-
-    def encode_intermediate(self, piece: list[int]):
+    def encode_intermediate(self, piece: list[int]) -> list[int]:
+        """ Encode a piece (as list of integer) till its maximum
+        Args:
+            piece (list[int]): piece to encode
+        Returns:
+            list[int]: piece encoded 
+        """        
         current_piece = piece
         new_piece = self.__round_encode(current_piece)
 
+        # until current_piece is bigger then new_piece, keep encoding
         while len(current_piece) != len(new_piece):
             current_piece = new_piece
             new_piece = self.__round_encode(current_piece)
@@ -112,6 +126,14 @@ class NanoSocratesBPE(Encoder):
 
 
     def __round_encode(self, piece: list[int]):
+        """_summary_
+
+        Args:
+            piece (list[int]): _description_
+
+        Returns:
+            _type_: _description_
+        """
 
         if len(piece) == 1:
             return piece
@@ -143,6 +165,7 @@ class NanoSocratesBPE(Encoder):
     # TODO: Remake decode to take a list of token IDs
     def decode(self, token_ids: list[int]) -> str:
 
+        # deque: double ended queue
         token_stack: deque[int] = deque(token_ids)
         UTF_8_STRING_ARR: bytearray = bytearray()