add stop number

app.py

@@ -54,8 +54,17 @@ with col_2:
         value=0,
         step=1,
     )
+    
     sample = sub_ds[index_sample]
-    markdown_text = generation_markup_format(safe_text(sample["generation"]))
+    generation = sample["generation"]
+    stop_index_sample = st.number_input(
+        "Stop generation at character number",
+        min_value=0,
+        max_value=len(generation),
+        value=len(generation),
+        step=1,
+    )
+    markdown_text = generation_markup_format(safe_text(generation[:stop_index_sample]))
     st.markdown(markdown_text, unsafe_allow_html=True)
     st.markdown(
         "<h2 style='text-align: center'>Generation configuration</h2>",