diff --git a/packages/bcf/package.json b/packages/bcf/package.json
index 36939a83e..97d4d4753 100644
--- a/packages/bcf/package.json
+++ b/packages/bcf/package.json
@@ -31,10 +31,8 @@
     "keywords": [],
     "dependencies": {
         "@xeokit/config": "^0.1.0",
-        "@xeokit/testutils": "^0.1.0",
+
         "@xeokit/core": "^0.1.0",
-        "@xeokit/scene": "^0.1.0",
-        "@xeokit/webglrenderer": "^0.1.0",
         "@xeokit/matrix": "^0.1.0",
         "@xeokit/data": "^0.1.0",
         "@xeokit/constants": "^0.1.0",
@@ -44,6 +42,7 @@
         "@xeokit/viewer": "^0.1.0"
     },
     "devDependencies": {
+        "@xeokit/testutils": "^0.1.0",
         "jest-electron": "^0.1.12",
         "@kayahr/jest-electron-runner": "^29.11.0"
     }
diff --git a/packages/bcf/src/BCFSnapshot.ts b/packages/bcf/src/BCFSnapshot.ts
index db476747a..b482e6e5c 100644
--- a/packages/bcf/src/BCFSnapshot.ts
+++ b/packages/bcf/src/BCFSnapshot.ts
@@ -1,15 +1,15 @@
 /**
- * TODO
+ * A bitmap snapshot of the viewpoint.
  */
 export interface BCFSnapshot {
 
     /**
-     * TODO
+     * Format of the snapshot.
      */
     snapshot_type: "png" | "jpeg",
 
     /**
-     * TODO
+     * Snapshot image data.
      */
     snapshot_data: string
-}
\ No newline at end of file
+}
diff --git a/packages/bcf/src/BCFViewSetupHints.ts b/packages/bcf/src/BCFViewSetupHints.ts
index 3575da71c..ecbce08b4 100644
--- a/packages/bcf/src/BCFViewSetupHints.ts
+++ b/packages/bcf/src/BCFViewSetupHints.ts
@@ -1,35 +1,35 @@
 /**
- * TODO
+ * Setup hints.
  */
 export interface BCFViewSetupHints {
 
     /**
-     * TODO
+     * Translucency of openings.
      */
     openings_translucent: boolean;
 
     /**
-     * TODO
+     * Translucency of space boundaries.
      */
     space_boundaries_translucent: boolean;
 
     /**
-     * TODO
+     * Visibility of openings.
      */
     openings_visible: boolean;
 
     /**
-     * TODO
+     * Visibility of space boundaries.
      */
     space_boundaries_visible: boolean;
 
     /**
-     * TODO
+     * Translucency of spaces.
      */
     spaces_translucent: boolean;
 
     /**
-     * TODO
+     * Visibility of spaces.
      */
     spaces_visible: boolean;
-}
\ No newline at end of file
+}
diff --git a/packages/boundaries/src/index.ts b/packages/boundaries/src/index.ts
index 70afbe263..da6fa534f 100755
--- a/packages/boundaries/src/index.ts
+++ b/packages/boundaries/src/index.ts
@@ -35,8 +35,7 @@
  *
  * @module @xeokit/boundaries
  */
-import type {FloatArrayParam, IntArrayParam, } from "@xeokit/math";
-import {MAX_DOUBLE, MIN_DOUBLE, newFloatArray} from "@xeokit/math";
+import {FloatArrayParam, IntArrayParam, MAX_DOUBLE, MIN_DOUBLE, newFloatArray} from "@xeokit/math";
 import {createMat4, createVec2, createVec3, lenVec3, mulMat4, subVec3} from "@xeokit/matrix";
 import {decompressPoint3WithMat4} from "@xeokit/compression";
 
diff --git a/packages/scene/src/SceneTile.ts b/packages/scene/src/SceneTile.ts
index f5cbc51bc..ce9e2615f 100644
--- a/packages/scene/src/SceneTile.ts
+++ b/packages/scene/src/SceneTile.ts
@@ -1,5 +1,7 @@
 import {Scene} from "./Scene";
 import {FloatArrayParam} from "@xeokit/math";
+import {SceneModel} from "./SceneModel";
+import {SceneObject} from "./SceneObject";
 
 /**
  * A tile in a {@link @xeokit/scene!SceneModel}.
@@ -16,10 +18,28 @@ export class SceneTile {
     public readonly origin: FloatArrayParam;
     public numObjects: number;
 
+    /**
+     * The {@link @xeokit/scene!SceneModel | SceneModels} belonging to this SceneTile, each keyed to
+     * its {@link @xeokit/scene!SceneModel.id | SceneModel.id}.
+     *
+     * A SceneModel can belong to more than one SceneTile.
+     */
+    public readonly models: { [key: string]: SceneModel };
+
+    /**
+     * The {@link @xeokit/scene!SceneObject | SceneObjects} in this TiSceneTilele,
+     * mapped to {@link @xeokit/scene!SceneObject.id | SceneObject.id}.
+     *
+     * A SceneObject can belong to more than one SceneTile.
+     */
+    public readonly objects: { [key: string]: SceneObject };
+
     constructor(scene: Scene, id: string, origin: FloatArrayParam) {
         this.scene = scene;
         this.id = id;
         this.origin = origin;
         this.numObjects = 0;
+        this.models = {};
+        this.objects = {};
     }
 }