diff --git a/config.js b/config.js
index f8209e0..f5d4ca5 100644
--- a/config.js
+++ b/config.js
@@ -16,7 +16,7 @@ const theater2Popup = `
 
 export const config = {
     scene : {
-        initialExposure: 0.85,
+        initialExposure: 0.95,
         autoLP: false,
         shadows: false,
         initLightDir: [0.2,-0.3,-0.7],
@@ -111,6 +111,7 @@ export const config = {
                             {
                                 label: 'Palcoscenico',
                                 model: 'models/ssgp/Teatro_SSGP_Palcoscenico.glb',
+                                isSemantic: true,
                             },
                             {
                                 label: 'Boccascena / Proscenio',
diff --git a/js/scene.js b/js/scene.js
index ae7c4e2..9abc68c 100644
--- a/js/scene.js
+++ b/js/scene.js
@@ -37,7 +37,6 @@ function init () {
     ATON.setMainLightDirection(new THREE.Vector3(...config.scene.initLightDir));
     ATON.toggleShadows(config.scene.shadows);
     ATON.setExposure(config.scene.initialExposure);
-    // Open settings side panel when clicking on settings btn
 
     AppState.camera = ATON.Nav._camera;
     AppState.renderer = ATON._renderer;
@@ -106,10 +105,63 @@ function loadNodes(nodes) {
             AppState.clipping.boundingSphere = node.getBound();
         }
 
-        AppState.nodes.push({id: n.label, active: n.isInvisible ? false: true});
+        if (n.isSemantic) {
+            createSemanticNode(n.model, n.label);
+            //ATON.getSemanticRoot().attach(semNode);
+        }
+
+        AppState.nodes.push({
+            id: n.label,
+            active: n.isInvisible ? false: true,
+            isSemantic: n.isSemantic
+        });
     });
     
     if (!AppState.clipping.boundingSphere) {
         console.error("No bounding sphere computed, clipping will fail. Ensure one node has 'isMain: true'.");
     }
 }
+/**
+ * Uses a generic sphere shape as semantic annotation
+ * @param {Sphere} bound The scene node's bounding sphere
+ * @param {string} id The original scene node ID (3D object)
+ * @returns {ATON.SceneNode}
+function createSemanticNode(bound, id) {
+    // Default/highlight materials for semantic node
+    let matSemDef = ATON.MatHub.materials.semanticShape;
+    let matSemHL  = ATON.MatHub.materials.semanticShapeHL;
+
+    const semNode = ATON.createSemanticNode(id) 
+        .setDefaultAndHighlightMaterials(matSemDef, matSemHL)
+        .attachToRoot();
+
+    const sphereCenter = bound.center;
+    const sphereRadius = bound.radius * 0.2;
+
+    let sphere = ATON.SemFactory.createSphere(id, sphereCenter, sphereRadius);
+
+    console.debug('Bound:', bound);
+    console.debug('Semantic sphere:', sphere);
+}
+*/
+
+/**
+ * Creates a semantic annotation from a model
+ * @param {string} model The model's path to load
+ * @param {string} id The original scene node ID (3D object)
+ * @returns {ATON.SceneNode}
+ */
+function createSemanticNode(model, id) {
+    // Default/highlight materials for semantic node
+    let matSemDef = ATON.MatHub.materials.semanticShape;
+    let matSemHL  = ATON.MatHub.materials.semanticShapeHL;
+
+    const semNode = ATON.createSemanticNode(id) 
+        .load(model)
+        .setDefaultAndHighlightMaterials(matSemDef, matSemHL)
+        .attachToRoot();
+    
+    semNode.setRotation(...config.scene.initRotation);
+
+    return semNode;
+}
diff --git a/scenes/ssgp/index.js b/scenes/ssgp/index.js
index b05f4b8..ac959f8 100644
--- a/scenes/ssgp/index.js
+++ b/scenes/ssgp/index.js
@@ -15,3 +15,17 @@ AppState.treeNodes = tree;
 // TODO: add Map object for lookup optimization
 
 openScene(marker, AppState.normalizedNodes);
+
+// General hover/leave events handling for all semantic nodes.
+ATON.on("SemanticNodeHover", (semid) => {
+        let node = ATON.getSemanticNode(semid);
+        
+        console.debug('Sem node:', semid);
+
+        if (node) node.highlight();
+    });
+
+ATON.on("SemanticNodeLeave", (semid) => {
+    let node = ATON.getSemanticNode(semid);
+    if (node) node.restoreDefaultMaterial();
+});
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