diff --git a/README.md b/README.md
index 7be569a..5006e4c 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ $ playwright install
 
 Now install the application itself and run it:
 ```shell
-$ flit install --symlink
+$ pip install --editable .
 $ dp-wizard
 ```
 Your browser should open and connect you to the application.
diff --git a/dp_wizard/utils/code_generators/__init__.py b/dp_wizard/utils/code_generators/__init__.py
index e940049..3f7fd55 100644
--- a/dp_wizard/utils/code_generators/__init__.py
+++ b/dp_wizard/utils/code_generators/__init__.py
@@ -100,15 +100,6 @@ def _make_queries(self):
             )
         )
 
-    # def _make_queries(self):
-    #     confidence_note = (
-    #         "The actual value is within the shown range "
-    #         f"with {int(confidence * 100)}% confidence."
-    #     )
-    #     column_names = self.columns.keys()
-    #     return f"confidence = {confidence} # {confidence_note}\n\n" + "\n".join(
-    #         _make_query(column_name) for column_name in column_names
-
     def _make_query(self, column_name):
         indentifier = name_to_identifier(column_name)
         title = f"DP counts for {column_name}"
diff --git a/dp_wizard/utils/code_generators/no-tests/_notebook.py b/dp_wizard/utils/code_generators/no-tests/_notebook.py
index d3342d2..c44a629 100644
--- a/dp_wizard/utils/code_generators/no-tests/_notebook.py
+++ b/dp_wizard/utils/code_generators/no-tests/_notebook.py
@@ -32,7 +32,6 @@
 # Finally, we run the queries and plot the results.
 
 QUERIES_BLOCK
-# -
 
 # The code below produces a summary report.
 
diff --git a/tests/test_app.py b/tests/test_app.py
index 11c1927..f4e4c40 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -5,6 +5,15 @@
 from shiny.pytest import create_app_fixture
 
 
+bp = "BREAKPOINT()".lower()
+if bp in Path(__file__).read_text():
+    raise Exception(  # pragma: no cover
+        f"Instead of `{bp}`, use `page.pause()` in playwright tests. "
+        "See https://playwright.dev/python/docs/debug"
+        "#run-a-test-from-a-specific-breakpoint"
+    )
+
+
 demo_app = create_app_fixture(Path(__file__).parent / "fixtures/demo_app.py")
 default_app = create_app_fixture(Path(__file__).parent / "fixtures/default_app.py")
 tooltip = "#choose_csv_demo_tooltip_ui svg"