diff --git a/app/cmd/db.py b/app/cmd/db.py
index 22ddf24..55664a3 100644
--- a/app/cmd/db.py
+++ b/app/cmd/db.py
@@ -181,18 +181,27 @@ def _create_acte(folder: str)-> None:
         Acte.create(**data)
 
 def _create_transcribed_by(folder: str)-> None:
+    """create table transcribed_by"""
     transcribed = []
     for acte in os.listdir(folder):
         if acte.endswith(".xml"):
             soup = make_soup(os.path.join(folder, acte))
+            # 1.1/ Acte's id.
+            # the file name is the acte'id when you remove ".xml"
+            # so we make a query on Acte to get the primary key
             acte_q = [t.id_acte for t in Acte.select().where(
                 Acte.filename == acte.replace(".xml", ""))]
-            transcriber = soup.fileDesc.titleStmt
-            for item in transcriber.find_all("respStmt"):
+            # 1.2/ Agent's name (transcriber).
+            # transcriber name is in //fileDesc/titleStmt/respStmt/name
+            titlestmt = soup.fileDesc.titleStmt
+            for item in titlestmt.find_all("respStmt"):
+                # query on table Agent to get the primary key
                 agent_q = [t.id_agent for t in Agent.select().where(
                     Agent.agent_name == item.find("name").text)]
+                # 2/ Make the data list with both acte's and agent's keys
                 transcribed.append({"transcr_acte": acte_q[0],
                     "transcr_agent": agent_q[0]})
+    # 3/ Create the table
     for data in tqdm(transcribed, desc="Populating Transcribed_by..."):
         Transcribed_by.create(**data)
 
diff --git a/app/modeles/bdd_actes_princiers_4.png b/app/modeles/bdd_actes_princiers_4.png
new file mode 100644
index 0000000..4ed6520
Binary files /dev/null and b/app/modeles/bdd_actes_princiers_4.png differ