diff --git a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataCache.java b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataCache.java
index 2ec043a10..cb8b50422 100644
--- a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataCache.java
+++ b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataCache.java
@@ -1,15 +1,18 @@
 package com.seibel.distanthorizons.api.interfaces.data;
 
 /**
- * Can be used to drastically speed up repeat read operations in {@link IDhApiTerrainDataRepo}.
- *
+ * Can be used to drastically speed up repeat read operations in {@link IDhApiTerrainDataRepo}. <br><br>
+ * 
+ * Once you are done with this cache, closing it will free up any objects
+ * the cache is holding. This can reduce Garbage Collector overhead and reduce stuttering.
+ * 
  * @see IDhApiTerrainDataRepo
  * 
  * @author James Seibel
- * @version 2024-7-14
+ * @version 2026-1-29
  * @since API 3.0.0
  */
-public interface IDhApiTerrainDataCache // TODO should this be AutoClosable?
+public interface IDhApiTerrainDataCache extends AutoCloseable
 {
 	/**
 	 * Removes any data that's currently stored in this cache.
diff --git a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataRepo.java b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataRepo.java
index 10e9cb361..336f880da 100644
--- a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataRepo.java
+++ b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/data/IDhApiTerrainDataRepo.java
@@ -42,6 +42,8 @@ public interface IDhApiTerrainDataRepo
 	// getters //
 	//=========//
 	
+	// TODO should we force users to pass in a cache, even if null?
+	
 	/** @see IDhApiTerrainDataRepo#getSingleDataPointAtBlockPos(IDhApiLevelWrapper, int, int, int, IDhApiTerrainDataCache) */
 	default DhApiResult<DhApiTerrainDataPoint> getSingleDataPointAtBlockPos(IDhApiLevelWrapper levelWrapper, int blockPosX, int blockPosY, int blockPosZ) { return this.getSingleDataPointAtBlockPos(levelWrapper, blockPosX, blockPosY, blockPosZ, null); }
 	/** 
diff --git a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/events/IDhApiEventInjector.java b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/events/IDhApiEventInjector.java
index ba9bdb336..d2aa07fdf 100644
--- a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/events/IDhApiEventInjector.java
+++ b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/events/IDhApiEventInjector.java
@@ -40,8 +40,7 @@ public interface IDhApiEventInjector extends IDependencyInjector<IDhApiEvent>
 	 * @return true if the handler was unbound, false if the handler wasn't bound.
 	 * @throws IllegalArgumentException if the implementation object doesn't implement the interface
 	 */
-	// Note to self: Don't try adding a generic type to IDhApiEvent, the constructor won't accept it
-	// TODO why are we removing the class instead of an instance?
+	// Note to DH Devs: Don't try adding a generic type to IDhApiEvent, the constructor won't accept it
 	boolean unbind(Class<? extends IDhApiEvent> dependencyInterface, Class<? extends IDhApiEvent> dependencyClassToRemove) throws IllegalArgumentException;
 	
 	
diff --git a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/render/IDhApiRenderableBoxGroup.java b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/render/IDhApiRenderableBoxGroup.java
index 399ba1571..2587bd0fe 100644
--- a/api/src/main/java/com/seibel/distanthorizons/api/interfaces/render/IDhApiRenderableBoxGroup.java
+++ b/api/src/main/java/com/seibel/distanthorizons/api/interfaces/render/IDhApiRenderableBoxGroup.java
@@ -73,7 +73,7 @@ public interface IDhApiRenderableBoxGroup extends List<DhApiRenderableBox>
 	 * This is a good place to change the origin or notify of any box changes. 
 	 */
 	void setPreRenderFunc(Consumer<DhApiRenderParam> renderEventParam);
-	void setPostRenderFunc(Consumer<DhApiRenderParam> renderEventParam); // TODO name?
+	void setPostRenderFunc(Consumer<DhApiRenderParam> renderEventParam);
 	
 	/**
 	 * If a cube's color, position, or other property is changed this method
diff --git a/core/src/main/java/com/seibel/distanthorizons/core/api/external/methods/data/DhApiTerrainDataCache.java b/core/src/main/java/com/seibel/distanthorizons/core/api/external/methods/data/DhApiTerrainDataCache.java
index 5b647bd98..c1ac4b4dc 100644
--- a/core/src/main/java/com/seibel/distanthorizons/core/api/external/methods/data/DhApiTerrainDataCache.java
+++ b/core/src/main/java/com/seibel/distanthorizons/core/api/external/methods/data/DhApiTerrainDataCache.java
@@ -13,7 +13,7 @@ import java.lang.ref.SoftReference;
 public class DhApiTerrainDataCache implements IDhApiTerrainDataCache
 {
 	private final Object modificationLock = new Object();
-	private Long2ReferenceOpenHashMap<SoftReference<FullDataSourceV2>> posToFullDataRef = new Long2ReferenceOpenHashMap<>();
+	private final Long2ReferenceOpenHashMap<SoftReference<FullDataSourceV2>> posToFullDataRef = new Long2ReferenceOpenHashMap<>();
 	
 	private static final DhLogger LOGGER = new DhLoggerBuilder().build();
 	
@@ -22,6 +22,7 @@ public class DhApiTerrainDataCache implements IDhApiTerrainDataCache
 	//==================//
 	// internal methods //
 	//==================//
+	//region
 	
 	public void add(long pos, FullDataSourceV2 dataSource)
 	{
@@ -48,11 +49,14 @@ public class DhApiTerrainDataCache implements IDhApiTerrainDataCache
 		}
 	}
 	
+	//endregion
+	
 	
 	
 	//=============//
 	// API methods //
 	//=============//
+	//region
 	
 	@Override 
 	public void clear()
@@ -82,6 +86,23 @@ public class DhApiTerrainDataCache implements IDhApiTerrainDataCache
 		}
 	}
 	
+	//endregion
+	
+	
+	
+	//================//
+ 	// base overrides //
+	//================//
+	//region
+	
+	@Override 
+	public void close() { this.clear(); }
+	
+	@Override 
+	public String toString() { return "Size: " + this.posToFullDataRef.size(); }
+	
+	//endregion
+	
 	
 	
 }