diff --git a/docs/source/changes.md b/docs/source/changes.md
index 6d560354..e92eaa96 100644
--- a/docs/source/changes.md
+++ b/docs/source/changes.md
@@ -12,6 +12,7 @@ releases are available on [PyPI](https://pypi.org/project/pytask) and
   `attributes` field on `PNode` and `PProvisionalNode` that will be mandatory on custom
   nodes in v0.6.0.
 - {pull}`662` adds the `.pixi` folder to be ignored by default during the collection.
+- {pull}`671` enhances the documentation on complex repetitions. Closes {issue}`670`.
 
 ## 0.5.2 - 2024-12-19
 
diff --git a/docs/source/how_to_guides/bp_complex_task_repetitions.md b/docs/source/how_to_guides/bp_complex_task_repetitions.md
index 46c0ff3b..6e83a9e4 100644
--- a/docs/source/how_to_guides/bp_complex_task_repetitions.md
+++ b/docs/source/how_to_guides/bp_complex_task_repetitions.md
@@ -74,6 +74,9 @@ caption: task_example.py
 As you see, we lost a level of indentation and we moved all the generations of names and
 paths to the dimensions and multi-dimensional objects.
 
+Using a {class}`~pytask.PythonNode` allows us to hash the model and reexecute the task
+if we define other model settings.
+
 ## Adding another level
 
 Extending a dimension by another level is usually quickly done. For example, if we have
diff --git a/docs_src/how_to_guides/bp_complex_task_repetitions/example_improved.py b/docs_src/how_to_guides/bp_complex_task_repetitions/example_improved.py
index fd313479..d41360d2 100644
--- a/docs_src/how_to_guides/bp_complex_task_repetitions/example_improved.py
+++ b/docs_src/how_to_guides/bp_complex_task_repetitions/example_improved.py
@@ -1,14 +1,18 @@
+from pathlib import Path
 from typing import Annotated
 from typing import Any
 
 from myproject.config import EXPERIMENTS
+from myproject.config import Model
 from myproject.config import data_catalog
 
+from _pytask.nodes import PythonNode
 from pytask import task
 
 for experiment in EXPERIMENTS:
 
     @task(id=experiment.name)
     def task_fit_model(
-        path_to_data: experiment.dataset.path,
+        model: Annotated[Model, PythonNode(hash=True)] = experiment.model,
+        path_to_data: Path = experiment.dataset.path,
     ) -> Annotated[Any, data_catalog[experiment.fitted_model_name]]: ...
diff --git a/docs_src/how_to_guides/bp_complex_task_repetitions/experiment.py b/docs_src/how_to_guides/bp_complex_task_repetitions/experiment.py
deleted file mode 100644
index 002c669e..00000000
--- a/docs_src/how_to_guides/bp_complex_task_repetitions/experiment.py
+++ /dev/null
@@ -1,37 +0,0 @@
-from pathlib import Path
-from typing import NamedTuple
-
-SRC = Path(__file__).parent
-BLD = SRC / "bld"
-
-
-class Dataset(NamedTuple):
-    name: str
-
-    @property
-    def path(self) -> Path:
-        return SRC / f"{self.name}.pkl"
-
-
-class Model(NamedTuple):
-    name: str
-
-
-DATASETS = [Dataset("a"), Dataset("b"), Dataset("c")]
-MODELS = [Model("ols"), Model("logit"), Model("linear_prob")]
-
-
-class Experiment(NamedTuple):
-    dataset: Dataset
-    model: Model
-
-    @property
-    def name(self) -> str:
-        return f"{self.model.name}-{self.dataset.name}"
-
-    @property
-    def path(self) -> Path:
-        return BLD / f"{self.name}.pkl"
-
-
-EXPERIMENTS = [Experiment(dataset, model) for dataset in DATASETS for model in MODELS]