diff --git a/python/docs/_scripts/builder.py b/python/docs/_scripts/builder.py
index fe90a5855..57e03b08b 100644
--- a/python/docs/_scripts/builder.py
+++ b/python/docs/_scripts/builder.py
@@ -6,12 +6,17 @@
 from typing import Any, Union
 
 from pydantic import ValidationError
-from quartodoc import blueprint, collect, layout  # , preview
+from quartodoc import blueprint, collect, layout
 from quartodoc.inventory import convert_inventory, create_inventory
 from quartodoc.validation import fmt
 from renderer import Renderer
 from summarizer import Summarizer
 
+# `preview()` can be used to help debug doc generation.
+# use it on a `section` or `page` element to see a visual
+# representation of the element contents. Use the `max_depth`
+# named param to limit how much is returned to stdout.
+# from quartodoc import preview
 
 _log = logging.getLogger("quartodoc")
 
@@ -176,14 +181,16 @@ def write_pages(self):
                         _log.info(f"Rendering {page.path}")
                         # preview(page, max_depth=4)
                         page_text = self.renderer.render(page)
-                        page_path = location / (page.path + self.out_page_suffix)
+                        page_path = location / \
+                            (page.path + self.out_page_suffix)
                         self.write_page_if_not_exists(page_path, page_text)
                     if page.path in self.page_map:
                         del self.page_map[page.path]
 
                     self.update_page_items(page, location, is_flat)
                 else:
-                    raise NotImplementedError(f"Unsupported section item: {type(page)}")
+                    raise NotImplementedError(
+                        f"Unsupported section item: {type(page)}")
 
         if len(self.page_map.keys()) > 0:
             _log.warning(f"Extra pages: {self.page_map.keys()}")
@@ -207,7 +214,8 @@ def update_page_items(self, page: layout.Page, location: Path, is_flat: bool):
                 )
                 self.update_items(doc, page_path)
             else:
-                raise NotImplementedError(f"Unsupported page item: {type(doc)}")
+                raise NotImplementedError(
+                    f"Unsupported page item: {type(doc)}")
 
     def update_items(self, doc: layout.Doc, page_path: str):
         name = doc.obj.path
@@ -285,7 +293,8 @@ def from_quarto_config(cls, quarto_cfg: "str | dict"):
 
         cfg = quarto_cfg.get("quartodoc")
         if cfg is None:
-            raise KeyError("No `quartodoc:` section found in your _quarto.yml.")
+            raise KeyError(
+                "No `quartodoc:` section found in your _quarto.yml.")
 
         return Builder(
             **{k: v for k, v in cfg.items()},