diff --git a/graphexp.html b/graphexp.html
index de1ce1e..654423a 100644
--- a/graphexp.html
+++ b/graphexp.html
@@ -121,7 +121,7 @@ <h1 class="header-heading">Graph Explorer v 0.6</h1>
 
 				<div class="aside right_bar" id="details" style="background-color:transparent;pointer-events:auto;">
 					<div id="messageArea"></div><div id="outputArea"></div>
-					<div id="nodeInfo" style="background-color:transparent;pointer-events:none;">
+					<div id="nodeInfo" style="background-color:transparent;overflow:scroll; height:400px;">
 					</div>				
 				</div>
 				<!--
@@ -151,6 +151,7 @@ <h1 class="header-heading">Graph Explorer v 0.6</h1>
 					<div class="nav input_unit_container">
 						<label for="communication_method">Gremlin version:</label>
 						<select name="communication_method" id="communication_method">
+							<option value="GraphSON3_4">3.4.*</option>
 							<option value="GraphSON3">3.3.*</option>
 							<option value="GraphSON2">3.2.*</option>
 						</select>
@@ -389,11 +390,16 @@ <h1 class="header-heading">Graph Explorer v 0.6</h1>
 	function get_prop_value(d,prop_name,item){
 		//let COMMUNICATION_METHOD = $('#communication_method').val();
 		if (prop_name in d.properties){
+			prop_value = d.properties[prop_name]
 			if (item=='nodes'){
-				if ('summary' in d.properties[prop_name]) {
-					return d.properties[prop_name]['summary'];
-				} else if (COMMUNICATION_METHOD == 'GraphSON1') {
-					return d.properties[prop_name][0].value;
+				if (typeof prop_value === "string"){
+					return prop_value;
+				} else {
+					if ('summary' in prop_value) {
+						return prop_value['summary'];
+					} else if (COMMUNICATION_METHOD == 'GraphSON1') {
+						return prop_value[0].value;
+					}
 				}
 			}
 			else if (item=='edges'){
diff --git a/scripts/graph_viz.js b/scripts/graph_viz.js
index 65a382c..ec3fa9d 100644
--- a/scripts/graph_viz.js
+++ b/scripts/graph_viz.js
@@ -116,7 +116,10 @@ var graph_viz = (function () {
 		_svg.selectAll("*").remove();
 		_Nodes = [], _Links = [];
 		layers.clear_old();
-		_simulation = {};
+        _simulation = {};
+
+        // clear DB table
+        $('#tableDBDetails tbody').empty()
 	}
 
 
@@ -400,8 +403,10 @@ var graph_viz = (function () {
 		var _nodes = node_deco.merge(all_nodes);
 
 
-
-
+		var focus_node_data = d3.select(".focus_node").data();
+		if (focus_node_data.length > 0){
+			infobox.display_info(focus_node_data[0]);
+		}
 		//////////////////////////////////
 		// Additional clean up
 		graphShapes.decorate_old_elements(layers.depth());
@@ -533,8 +538,8 @@ var graph_viz = (function () {
 				_svg.selectAll(".old_edge" + stop_layer).remove();
 				_svg.selectAll(".old_edgepath" + stop_layer).remove();
 				_svg.selectAll(".old_edgelabel" + stop_layer).remove();
-				infobox.display_info(d);
 				graphioGremlin.click_query(d);
+				//infobox.display_info(d);
 				console.log('event!!')
 			}
 		}
diff --git a/scripts/graphioGremlin.js b/scripts/graphioGremlin.js
index 401044e..db6cd45 100644
--- a/scripts/graphioGremlin.js
+++ b/scripts/graphioGremlin.js
@@ -88,12 +88,15 @@ var graphioGremlin = (function(){
 
 
 	function search_query() {
+		// Query sent to the server when clicking the search button
+		//
 		// Preprocess query
 		let input_string = $('#search_value').val();
 		let input_field = $('#search_field').val();
 		let label_field = $('#label_field').val();
 		let limit_field = $('#limit_field').val();
-		let search_type = $('#search_type').val();
+        let search_type = $('#search_type').val();
+        let communication_method = $('#communication_method').val();
 		//console.log(input_field)
 		var filtered_string = input_string;//You may add .replace(/\W+/g, ''); to refuse any character not in the alphabet
 		if (filtered_string.length>50) filtered_string = filtered_string.substring(0,50); // limit string length
@@ -121,14 +124,17 @@ var graphioGremlin = (function(){
 		}
 
 		let gremlin_query_nodes = "nodes = " + traversal_source + ".V()" + has_str;
+        // Query limit
 		if (limit_field !== "" && isInt(limit_field) && limit_field > 0) {
-			gremlin_query_nodes += ".limit(" + limit_field + ").toList();";
-		} else {
-			gremlin_query_nodes += ".toList();";
-		}
+			gremlin_query_nodes += ".limit(" + limit_field + ")";
+        } else {
+			console.log('Warning: no node limit set for the query. The query may fail if the graph is too big.')
+        }
+		gremlin_query_nodes += ".toList();";
+		
 		let gremlin_query_edges = "edges = " + traversal_source + ".V(nodes).aggregate('node').outE().as('edge').inV().where(within('node')).select('edge').toList();";
-                let gremlin_query_edges_no_vars = "edges = " + traversal_source + ".V()"+has_str+".aggregate('node').outE().as('edge').inV().where(within('node')).select('edge').toList();";
-                //let gremlin_query_edges_no_vars = "edges = " + traversal_source + ".V()"+has_str+".bothE();";
+        let gremlin_query_edges_no_vars = "edges = " + traversal_source + ".V()"+has_str+".aggregate('node').outE().as('edge').inV().where(within('node')).select('edge').toList();";
+        //let gremlin_query_edges_no_vars = "edges = " + traversal_source + ".V()"+has_str+".bothE();";
 		let gremlin_query = gremlin_query_nodes + gremlin_query_edges + "[nodes,edges]";
 		console.log(gremlin_query);
 
@@ -161,15 +167,30 @@ var graphioGremlin = (function(){
 			 !isNaN(parseInt(value, 10));
 	}
 	function click_query(d) {
-		var edge_filter = $('#edge_filter').val();
-		// Gremlin query
-		//var gremlin_query = traversal_source + ".V("+d.id+").bothE().bothV().path()"
-		// 'inject' is necessary in case of an isolated node ('both' would lead to an empty answer)
+		// Query sent to the server when a node is clicked
+		//
+        var edge_filter = $('#edge_filter').val();
+        var communication_method = $('#communication_method').val();
 		var id = d.id;
 		if(isNaN(id)){ // Add quotes if id is a string (not a number).
 			id = '"'+id+'"';
 		}
-		var gremlin_query_nodes = 'nodes = ' + traversal_source + '.V('+id+').as("node").both('+(edge_filter?'"'+edge_filter+'"':'')+').as("node").select(all,"node").inject(' + traversal_source + '.V('+id+')).unfold()'
+		// Gremlin query
+		var gremlin_query_nodes = 'nodes = ' + traversal_source + '.V('+id+').as("node").both('+(edge_filter?'"'+edge_filter+'"':'')+').as("node").select(all,"node").unfold()'
+        // Variant depending on the Gremlin version
+        if (communication_method == "GraphSON3_4") { 
+        	// Version 3.4
+            gremlin_query_nodes += ".valueMap().with(WithOptions.tokens)";
+            gremlin_query_nodes += 'fold().inject(' + traversal_source + '.V(' + id + ').valueMap().with(WithOptions.tokens)).unfold()';
+        } else {
+        	gremlin_query_nodes += 'fold().inject(' + traversal_source + '.V(' + id + ')).unfold()';
+        }
+		//var gremlin_query_nodes = 'nodes = ' + traversal_source + '.V('+id+').as("node").both('+(edge_filter?'"'+edge_filter+'"':'')+').as("node").select(all,"node").unfold().valueMap()'
+		//gremlin_query_nodes += 'fold().inject(' + traversal_source + '.V('+id+').valueMap()).unfold()'
+
+		// 'inject' is necessary in case of an isolated node ('both' would lead to an empty answer)
+		console.log('Query for the node and its neigbhors')
+		console.log(gremlin_query_nodes)
 		var gremlin_query_edges = "edges = " + traversal_source + ".V("+id+").bothE("+(edge_filter?"'"+edge_filter+"'":"")+")";
 		var gremlin_query = gremlin_query_nodes+'\n'+gremlin_query_edges+'\n'+'[nodes.toList(),edges.toList()]'
 		// while busy, show we're doing something in the messageArea.
@@ -355,7 +376,7 @@ var graphioGremlin = (function(){
 			return // TODO handle answer to check if data has been written
 		}
 		//console.log(COMMUNICATION_METHOD)
-		if (COMMUNICATION_METHOD == 'GraphSON3'){
+		if (COMMUNICATION_METHOD == 'GraphSON3' || COMMUNICATION_METHOD == 'GraphSON3_4'){
 			//console.log(data)
 			data = graphson3to1(data);
 			var arrange_data = arrange_datav3;
@@ -481,30 +502,67 @@ var graphioGremlin = (function(){
 		return data_dic
 	}
 
-	function extract_infov3(data) {
-	var data_dic = {id:data.id, label:data.label, type:data.type, properties:{}}
-	var prop_dic = data.properties
-	//console.log(prop_dic)
-	for (var key in prop_dic) { 
-		if (prop_dic.hasOwnProperty(key)) {
-			if (data.type == 'vertex'){// Extracting the Vertexproperties (properties of properties for vertices)
-				var property = prop_dic[key];
-				property['summary'] = get_vertex_prop_in_list(prop_dic[key]).toString();
-			} else {
-				var property = prop_dic[key]['value'];
-			}
-			//property = property.toString();
-			data_dic.properties[key] = property;
-			// If  a node position is defined in the DB, the node will be positioned accordingly
-			// a value in fx and/or fy tells D3js to fix the position at this value in the layout
-			if (key == node_position_x) {
-				data_dic.fx = prop_dic[node_position_x]['0']['value'];
-			}
-			if (key == node_position_y) {
-				data_dic.fy = prop_dic[node_position_y]['0']['value'];
-			}
-		}
-	}
+    function extract_infov3(data) {
+        var isGraphSON3_4 = ($('#communication_method').val() == "GraphSON3_4");
+        var data_dic = { id: data.id, label: data.label, type: data.type, properties: {} };
+        var prop_dic = {};
+        // VERSION 3.4
+        if (isGraphSON3_4) {
+           
+            for (var key in data) {
+                if (data.hasOwnProperty(key) && key != 'id' && key != 'label' && key != 'type') prop_dic[key] = data[key];
+            }
+            //var prop_dic = data.properties
+            //console.log(prop_dic)
+            for (var key in prop_dic) {
+                if (prop_dic.hasOwnProperty(key)) {
+                    if (data.type == 'vertex') {// Extracting the Vertexproperties (properties of properties for vertices)
+                        var property = prop_dic[key].toString();
+                        //property['summary'] = get_vertex_prop_in_list(prop_dic[key]).toString();
+                        //property = get_vertex_prop_in_list(prop_dic[key]).toString();
+                    } else {
+                        var property = prop_dic[key];//['value'];
+                    }
+                    //console.log('key - Property:')
+                    //console.log(key,property)
+                    //property = property.toString();
+                    data_dic.properties[key] = property;
+                    // If  a node position is defined in the DB, the node will be positioned accordingly
+                    // a value in fx and/or fy tells D3js to fix the position at this value in the layout
+                    if (key == node_position_x) {
+                        data_dic.fx = prop_dic[node_position_x]['0']['value'];
+                    }
+                    if (key == node_position_y) {
+                        data_dic.fy = prop_dic[node_position_y]['0']['value'];
+                    }
+                }
+            }
+        }
+        else {
+            // NOT VERSION 3.4
+            prop_dic = data.properties;
+	        //console.log(prop_dic)
+	        for (var key2 in prop_dic) { 
+		        if (prop_dic.hasOwnProperty(key2)) {
+			        if (data.type == 'vertex'){// Extracting the Vertexproperties (properties of properties for vertices)
+				        var property2 = prop_dic[key2];
+				        property2['summary'] = get_vertex_prop_in_list(prop_dic[key2]).toString();
+			        } else {
+				        var property2 = prop_dic[key2]['value'];
+			        }
+			        //property = property.toString();
+			        data_dic.properties[key2] = property2;
+			        // If  a node position is defined in the DB, the node will be positioned accordingly
+			        // a value in fx and/or fy tells D3js to fix the position at this value in the layout
+			        if (key2 == node_position_x) {
+				        data_dic.fx = prop_dic[node_position_x]['0']['value'];
+			        }
+			        if (key2 == node_position_y) {
+				        data_dic.fy = prop_dic[node_position_y]['0']['value'];
+			        }
+		        }
+	        }
+        }
 	if (data.type=="edge"){
 		data_dic.source = data.outV;
 		data_dic.target = data.inV;
@@ -515,7 +573,7 @@ var graphioGremlin = (function(){
 			}
 		}
 	}
-	return data_dic
+        return data_dic;
 }
 
 function get_vertex_prop_in_list(vertexProperty){
diff --git a/scripts/infobox.js b/scripts/infobox.js
index 55433dd..73cbf43 100644
--- a/scripts/infobox.js
+++ b/scripts/infobox.js
@@ -29,13 +29,13 @@ var infobox = (function(){
 	////////////////////////
 	// Public function
 	function create(label_graph,label_graphElem){
-		var graph_bar = d3.select(label_graph);
-		graph_bar.append("h2").text("Graph Info")
+        var graph_bar = d3.select(label_graph);
+        graph_bar.append("h2").text("Graph Info");
 		_table_Graphinfo = graph_bar.append("table").attr("id","tableGraph");
 		init_table(_table_Graphinfo,["Type","Count"]);
 
 		var graphElem_bar = d3.select(label_graphElem);
-		graphElem_bar.append("h2").text("Item Info")
+        graphElem_bar.append("h2").text("Item Info");
 		_table_IDinfo = graphElem_bar.append("table").attr("id","tableIdDetails");
 		init_table(_table_IDinfo,["Key","Value"]);
 		_table_DBinfo = graphElem_bar.append("table").attr("id","tableDBDetails");
@@ -49,8 +49,8 @@ var infobox = (function(){
 	  	var row = table_head.append("tr");
 	  	for (var key in entries){
 	 		row.append("th").text(entries[key]);
-	 	}
-	 	var table_body = table_handle.append("tbody");
+        } 
+        var table_body = table_handle.append("tbody");
 	  	var row = table_body.append("tr");
 	  	for (var key in entries){
 	 		row.append("td").text("");
@@ -58,7 +58,7 @@ var infobox = (function(){
 	}
 
 	function display_graph_info(data){
-		_table_Graphinfo.select("tbody").remove();
+        _table_Graphinfo.select("tbody").remove();
 	  	var info_table = _table_Graphinfo.append("tbody");
 	  	var data_to_display = data[0][0];
 	  	append_keysvalues(info_table,{"Node labels":""},"bold");
@@ -118,10 +118,12 @@ var infobox = (function(){
 	}
 
 
-	function _display_DBinfo(d){
-		_table_DBinfo.select("tbody").remove();
-	 	var info_table = _table_DBinfo.append("tbody");
+    function _display_DBinfo(d) {
+        _table_DBinfo.select("tbody").remove();
+        var info_table = _table_DBinfo.append("tbody");
 	 	if (d.type=='vertex'){
+	 		//console.log('display node data')
+	 		//console.log(d)
 		 	for (var key in d.properties){
 		 		_display_vertex_properties(key,d.properties[key],info_table)
 		 	}
@@ -137,24 +139,33 @@ var infobox = (function(){
 	}
 
 	function _display_vertex_properties(key,value,info_table) {
- 		for (var subkey in value){
-			// Ignore the summary field, which is set in graphioGremlin.extract_infov3()
-			if (subkey === "summary") {
-				continue;
+        if (typeof value === "string" && $('#communication_method').val() =="GraphSON3_4"){
+			var new_info_row = info_table.append("tr");
+ 			new_info_row.append("td").text(key).style("font-size",_font_size);
+ 			new_info_row.append("td").text(value).style("font-size",_font_size);
+ 			new_info_row.append("td").text('').style("font-size",_font_size);
+        }
+        else
+        {
+	 		for (var subkey in value){
+				// Ignore the summary field, which is set in graphioGremlin.extract_infov3()
+				if (subkey === "summary") {
+					continue;
+				}
+	 			if ( ((typeof value[subkey] === "object") && (value[subkey] !== null)) && ('properties' in value[subkey]) ){
+	 				for (var subsubkey in value[subkey].properties){
+	 					var new_info_row = info_table.append("tr");
+	 					new_info_row.append("td").text(key).style("font-size",_font_size);
+	 					new_info_row.append("td").text(value[subkey].value).style("font-size",_font_size);
+	 					new_info_row.append("td").text(subsubkey + ' : '+ value[subkey].properties[subsubkey]).style("font-size",_font_size);
+	 				}
+	 			} else {
+	 				var new_info_row = info_table.append("tr");
+	 				new_info_row.append("td").text(key).style("font-size",_font_size);
+	 				new_info_row.append("td").text(value[subkey].value).style("font-size",_font_size);
+	 				new_info_row.append("td").text('').style("font-size",_font_size);
+	 			}
 			}
- 			if ( ((typeof value[subkey] === "object") && (value[subkey] !== null)) && ('properties' in value[subkey]) ){
- 				for (var subsubkey in value[subkey].properties){
- 					var new_info_row = info_table.append("tr");
- 					new_info_row.append("td").text(key).style("font-size",_font_size);
- 					new_info_row.append("td").text(value[subkey].value).style("font-size",_font_size);
- 					new_info_row.append("td").text(subsubkey + ' : '+ value[subkey].properties[subsubkey]).style("font-size",_font_size);
- 				}
- 			} else {
- 				var new_info_row = info_table.append("tr");
- 				new_info_row.append("td").text(key).style("font-size",_font_size);
- 				new_info_row.append("td").text(value[subkey].value).style("font-size",_font_size);
- 				new_info_row.append("td").text('').style("font-size",_font_size);
- 			}
 		}
 	}