diff --git a/EXTENDING.md b/EXTENDING.md
index 77dd0fa..55036e4 100644
--- a/EXTENDING.md
+++ b/EXTENDING.md
@@ -7,12 +7,12 @@ Add a domain PDDL file to the `planetarium/domains/` directory, where the filena
 
 ### 2. Add an Oracle
 
-Every domain in Planetarium requires an [`Oracle`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/oracles/oracle.py#L8) object and file tied to it.
+Every domain in Planetarium requires an [`Oracle`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/oracles/oracle.py#L8) object and file tied to it.
 There are three fundamental components to the Oracle:
 
-- [`.reduce()`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/oracles/oracle.py#L11) function, which takes a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L430) or [`SceneGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L391) object and returns a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L80) or [`ReducedSceneGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L48) object, respectively.
-- [`.inflate()`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/oracles/oracle.py#L26) function, which takes a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L80) or [`ReducedSceneGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L48) object and returns a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L430) or [`SceneGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L391) object, respectively.
-- [`.fully_specify()`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/oracles/oracle.py#L40) function, which takes a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L430) and returns either a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/graph.py#L430) or a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L80) with all possible predicates added to the goal scene without changing the original definition of the problem.
+- [`.reduce()`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/oracles/oracle.py#L11) function, which takes a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L430) or [`SceneGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L391) object and returns a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L80) or [`ReducedSceneGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L48) object, respectively.
+- [`.inflate()`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/oracles/oracle.py#L65) function, which takes a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L80) or [`ReducedSceneGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L48) object and returns a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L430) or [`SceneGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L391) object, respectively.
+- [`.fully_specify()`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/oracles/oracle.py#L125) function, which takes a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L430) and returns either a [`ProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/graph.py#L430) or a [`ReducedProblemGraph`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L80) with all possible predicates added to the goal scene without changing the original definition of the problem.
 We refer to these predicates as "trivial predicates" in our paper.
 The `fully_specify` function is used to ensure that the problem is fully specified before evaluation.
 
@@ -47,9 +47,9 @@ Some predicates require special care for reducing and inflating.
 The key idea behind our reduced representation is to represent our PDDL problem in a domain-specific manner with as few graph nodes and edges as possible to reduce the search space for our equivalence check.
 The reduced representation also allows us to perform higher-level graph manipulations and searches more efficiently.
 
-**[`ReducedNode`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L9)**:
+**[`ReducedNode`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L9)**:
 
-A [`ReducedNode`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L9) is a domain-specific set of nodes that will be added to every `ReducedSceneGraph` or `ReducedProblemGraph` object on construction. They help hold metadata for specific types of predicates (non-binary predicates, 0-ary predicates, etc.) that are defined by the domain.
+A [`ReducedNode`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L9) is a domain-specific set of nodes that will be added to every `ReducedSceneGraph` or `ReducedProblemGraph` object on construction. They help hold metadata for specific types of predicates (non-binary predicates, 0-ary predicates, etc.) that are defined by the domain.
 
 Here is an example on how to reduce different -ary predicates using `ReducedNode`s:
 
@@ -66,7 +66,7 @@ There is no easy way to reduce these predicates, so the best way to keep track o
 Make sure to set the `position=` argument when adding the edge to the reduced graph to ensure you can reverse this action in your `inflate` function.
 
 **To register your `ReducedNode`**:
-At the top of your oracle script, you can call the [`ReducedNode.register`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/reduced_graph.py#L12) method, like the following:
+At the top of your oracle script, you can call the [`ReducedNode.register`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/reduced_graph.py#L12) method, like the following:
 
 ```python
 ReducedNode.register(
@@ -85,6 +85,6 @@ ReducedNode.register(
 This will let you use your `ReducedNode` like any other enum throughout your oracle script (e.g. `ReducedNode.ROOMS`).
 
 #### 2.3 Implementing `.plan()` (Optional)
-If you would like to evaluate whether or not a problem is _solvable_, you can implement the [`.plan()`](https://github.com/BatsResearch/planetarium/blob/main/planetarium/oracles/oracle.py#L56) function in your `Oracle`.
+If you would like to evaluate whether or not a problem is _solvable_, you can implement the [`.plan()`](https://github.com/BatsResearch/planetarium/blob/4ca530982baec33ebe332f62b48a622f24b0dfb2/planetarium/oracles/oracle.py#L141) function in your `Oracle`.
 You will still be able to evaluate whether or not a problem is solvable without implementing this function, but it will rely on running the FastDownward planner to solve your problem, which may be *significantly* slower than using a domain-specific planner.
 (Note that you should try using the `lama-first` alias if possible, as this planner does not look for the optimal plan, just a satisficing plan.)
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