diff --git a/numass-core/src/main/kotlin/inr/numass/data/analyzers/NumassAnalyzer.kt b/numass-core/src/main/kotlin/inr/numass/data/analyzers/NumassAnalyzer.kt
index 46368714..95bec135 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/analyzers/NumassAnalyzer.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/analyzers/NumassAnalyzer.kt
@@ -199,9 +199,11 @@ fun Table.withBinning(binSize: Int, loChannel: Int? = null, upChannel: Int? = nu
             .addNumber("binSize")
     val builder = ListTable.Builder(format)
 
-    var chan = loChannel ?: this.getColumn(NumassAnalyzer.CHANNEL_KEY).stream().mapToInt { it.intValue() }.min().orElse(0)
+    var chan = loChannel
+            ?: this.getColumn(NumassAnalyzer.CHANNEL_KEY).stream().mapToInt { it.intValue() }.min().orElse(0)
 
-    val top = upChannel ?: this.getColumn(NumassAnalyzer.CHANNEL_KEY).stream().mapToInt { it.intValue() }.max().orElse(1)
+    val top = upChannel
+            ?: this.getColumn(NumassAnalyzer.CHANNEL_KEY).stream().mapToInt { it.intValue() }.max().orElse(1)
 
     while (chan < top - binSize) {
         val count = AtomicLong(0)
diff --git a/numass-core/src/main/kotlin/inr/numass/data/api/NumassBlock.kt b/numass-core/src/main/kotlin/inr/numass/data/api/NumassBlock.kt
index fb711ee6..876bdda4 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/api/NumassBlock.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/api/NumassBlock.kt
@@ -62,7 +62,7 @@ interface NumassBlock : Metoid {
 
 typealias OrphanNumassEvent = Pair<Short, Long>
 
-inline fun OrphanNumassEvent.adopt(parent: NumassBlock): NumassEvent {
+fun OrphanNumassEvent.adopt(parent: NumassBlock): NumassEvent {
     return NumassEvent(this.first, this.second, parent)
 }
 
diff --git a/numass-core/src/main/kotlin/inr/numass/data/api/NumassPoint.kt b/numass-core/src/main/kotlin/inr/numass/data/api/NumassPoint.kt
index ebcba2d8..4dbf4d57 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/api/NumassPoint.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/api/NumassPoint.kt
@@ -1,6 +1,9 @@
 package inr.numass.data.api
 
+import hep.dataforge.io.envelopes.Envelope
 import hep.dataforge.meta.Metoid
+import inr.numass.data.storage.ClassicNumassPoint
+import inr.numass.data.storage.ProtoNumassPoint
 import java.time.Duration
 import java.time.Instant
 import java.util.stream.Stream
@@ -42,7 +45,7 @@ interface NumassPoint : Metoid, NumassBlock {
      * @return
      */
     override val startTime: Instant
-        get() = meta.optValue(START_TIME_KEY).map<Instant>{ it.timeValue() }.orElseGet { firstBlock.startTime }
+        get() = meta.optValue(START_TIME_KEY).map<Instant> { it.timeValue() }.orElseGet { firstBlock.startTime }
 
     /**
      * Get the length key of meta or calculate length as a sum of block lengths. The latter could be a bit slow
@@ -51,7 +54,7 @@ interface NumassPoint : Metoid, NumassBlock {
      */
     override val length: Duration
         get() = Duration.ofNanos(
-                meta.optValue(LENGTH_KEY).map<Long>{ it.longValue() }
+                meta.optValue(LENGTH_KEY).map<Long> { it.longValue() }
                         .orElseGet { blocks.mapToLong { it -> it.length.toNanos() }.sum() }
         )
 
@@ -65,7 +68,7 @@ interface NumassPoint : Metoid, NumassBlock {
      * @return
      */
     override val events: Stream<NumassEvent>
-        get() = blocks.flatMap{ it.events }
+        get() = blocks.flatMap { it.events }
 
     /**
      * Get all frames in all blocks as a single sequence
@@ -73,7 +76,7 @@ interface NumassPoint : Metoid, NumassBlock {
      * @return
      */
     override val frames: Stream<NumassFrame>
-        get() = blocks.flatMap{ it.frames }
+        get() = blocks.flatMap { it.frames }
 
     companion object {
 
@@ -81,5 +84,13 @@ interface NumassPoint : Metoid, NumassBlock {
         const val LENGTH_KEY = "length"
         const val HV_KEY = "voltage"
         const val INDEX_KEY = "index"
+
+        fun read(envelope: Envelope): NumassPoint {
+            return if (envelope.dataType?.startsWith("numass.point.classic") ?: envelope.meta.hasValue("split")) {
+                ClassicNumassPoint(envelope)
+            } else {
+                ProtoNumassPoint(envelope)
+            }
+        }
     }
 }
diff --git a/numass-core/src/main/kotlin/inr/numass/data/storage/ClassicNumassPoint.kt b/numass-core/src/main/kotlin/inr/numass/data/storage/ClassicNumassPoint.kt
index 588e7432..30cf79be 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/storage/ClassicNumassPoint.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/storage/ClassicNumassPoint.kt
@@ -22,6 +22,12 @@ import java.util.stream.StreamSupport
  */
 class ClassicNumassPoint(private val envelope: Envelope) : NumassPoint {
 
+    override val meta: Meta = envelope.meta
+
+    override val voltage: Double = meta.getDouble("external_meta.HV1_value", super.voltage)
+
+    override val index: Int = meta.getInt("external_meta.point_index", super.index)
+
     override val blocks: Stream<NumassBlock>
         get() {
             val length: Long = if (envelope.meta.hasValue("external_meta.acquisition_time")) {
@@ -36,15 +42,9 @@ class ClassicNumassPoint(private val envelope: Envelope) : NumassPoint {
         get() = if (meta.hasValue("start_time")) {
             meta.getValue("start_time").timeValue()
         } else {
-            Instant.EPOCH
+            super.startTime
         }
 
-    override val meta: Meta = envelope.meta
-
-    override val voltage: Double = meta.getDouble("external_meta.HV1_value", 0.0)
-
-    override val index: Int = meta.getInt("external_meta.point_index", -1)
-
 
     //TODO split blocks using meta
     private inner class ClassicBlock(
diff --git a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataLoader.kt b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataLoader.kt
index c258a14b..e4566910 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataLoader.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassDataLoader.kt
@@ -89,7 +89,9 @@ class NumassDataLoader(
 
     override val points: Stream<NumassPoint>
         get() {
-            return pointEnvelopes.map { ClassicNumassPoint(it) }
+            return pointEnvelopes.map {
+                NumassPoint.read(it)
+            }
         }
 
     override fun pull(fragmentName: String): Envelope {
diff --git a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassStorage.kt b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassStorage.kt
index 8264c182..bb257f10 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/storage/NumassStorage.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/storage/NumassStorage.kt
@@ -135,7 +135,7 @@ class NumassStorage : FileStorage {
             val files = ArrayList<NumassSet>()
             Files.list(dataDir).forEach { file ->
                 if (Files.isRegularFile(file) && file.fileName.toString().toLowerCase().endsWith(".dat")) {
-                    val name = file.fileName.toString()
+                    //val name = file.fileName.toString()
                     try {
                         files.add(NumassDatFile(file, Meta.empty()))
                     } catch (ex: Exception) {
diff --git a/numass-core/src/main/kotlin/inr/numass/data/storage/ProtoNumassPoint.kt b/numass-core/src/main/kotlin/inr/numass/data/storage/ProtoNumassPoint.kt
index 4da0a6b9..2f74d070 100644
--- a/numass-core/src/main/kotlin/inr/numass/data/storage/ProtoNumassPoint.kt
+++ b/numass-core/src/main/kotlin/inr/numass/data/storage/ProtoNumassPoint.kt
@@ -4,6 +4,8 @@ import hep.dataforge.context.Context
 import hep.dataforge.context.Global
 import hep.dataforge.io.envelopes.Envelope
 import hep.dataforge.kodex.buildMeta
+import hep.dataforge.kodex.toList
+import hep.dataforge.meta.Laminate
 import hep.dataforge.meta.Meta
 import inr.numass.data.NumassProto
 import inr.numass.data.api.NumassBlock
@@ -12,6 +14,7 @@ import inr.numass.data.api.NumassFrame
 import inr.numass.data.api.NumassPoint
 import inr.numass.data.dataStream
 import inr.numass.data.legacy.NumassFileEnvelope
+import org.slf4j.LoggerFactory
 import java.io.IOException
 import java.nio.file.Path
 import java.time.Duration
@@ -39,13 +42,25 @@ class ProtoNumassPoint(private val envelope: Envelope) : NumassPoint {
         get() = point.channelsList.stream()
                 .flatMap { channel ->
                     channel.blocksList.stream()
-                            .map { block -> ProtoBlock(channel.id.toInt(), block) }
+                            .map { block -> ProtoBlock(channel.id.toInt(), block, this) }
                             .sorted(Comparator.comparing<ProtoBlock, Instant> { it.startTime })
                 }
 
 
     override val meta: Meta = envelope.meta
 
+
+    override val voltage: Double = meta.getDouble("external_meta.HV1_value", super.voltage)
+
+    override val index: Int = meta.getInt("external_meta.point_index", super.index)
+
+    override val startTime: Instant
+        get() = if (meta.hasValue("start_time")) {
+            meta.getValue("start_time").timeValue()
+        } else {
+            super.startTime
+        }
+
     companion object {
         fun readFile(path: Path): ProtoNumassPoint {
             return ProtoNumassPoint(NumassFileEnvelope.open(path, true))
@@ -63,25 +78,27 @@ class ProtoNumassPoint(private val envelope: Envelope) : NumassPoint {
     }
 }
 
-class ProtoBlock(val channel: Int, private val block: NumassProto.Point.Channel.Block) : NumassBlock {
+class ProtoBlock(val channel: Int, private val block: NumassProto.Point.Channel.Block, parent: NumassBlock? = null) : NumassBlock {
     override val meta: Meta by lazy {
-        buildMeta {
+        val blockMeta = buildMeta {
             "channel" to channel
         }
+        return@lazy parent?.let { Laminate(blockMeta, parent.meta) } ?: blockMeta
     }
 
     override val startTime: Instant
         get() = ProtoNumassPoint.ofEpochNanos(block.time)
 
-    override val length: Duration
-        get() = if (meta.hasMeta("params")) {
-            Duration.ofNanos((meta.getDouble("params.b_size") / meta.getDouble("params.sample_freq") * 1e9).toLong())
-        } else if (meta.hasValue("length")) {
-            Duration.ofNanos(meta.getValue("length").longValue())
-        } else {
-            Duration.ZERO
+    override val length: Duration = when {
+        block.length > 0 -> Duration.ofNanos(block.length)
+        meta.hasValue("acquisition_time") -> Duration.ofMillis((meta.getDouble("acquisition_time") * 1000).toLong())
+        else -> {
+            LoggerFactory.getLogger(javaClass).error("No length information on block. Trying to infer from first and last events")
+            val times = events.map { it.timeOffset }.toList()
+            val nanos = (times.max()!! - times.min()!!)
+            Duration.ofNanos(nanos)
         }
-
+    }
 
     override val events: Stream<NumassEvent>
         get() = if (block.hasEvents()) {
@@ -94,13 +111,7 @@ class ProtoBlock(val channel: Int, private val block: NumassProto.Point.Channel.
 
     override val frames: Stream<NumassFrame>
         get() {
-            val tickSize = if (meta.hasMeta("params")) {
-                Duration.ofNanos((1e9 / meta.getInt("params.sample_freq")).toLong())
-            } else if (meta.hasValue("tick_length")) {
-                Duration.ofNanos(meta.getInt("tick_length").toLong())
-            } else {
-                Duration.ofNanos(1)
-            }
+            val tickSize = Duration.ofNanos(block.binSize)
             return block.framesList.stream().map { frame ->
                 val time = startTime.plusNanos(frame.time)
                 val data = frame.data.asReadOnlyByteBuffer()
diff --git a/numass-main/src/main/kotlin/inr/numass/scripts/tristan/ProtoPoint.kt b/numass-main/src/main/kotlin/inr/numass/scripts/tristan/ProtoPoint.kt
new file mode 100644
index 00000000..4ab0370f
--- /dev/null
+++ b/numass-main/src/main/kotlin/inr/numass/scripts/tristan/ProtoPoint.kt
@@ -0,0 +1,44 @@
+/*
+ * Copyright  2018 Alexander Nozik.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package inr.numass.scripts.tristan
+
+import hep.dataforge.context.Global
+import hep.dataforge.kodex.toList
+import inr.numass.data.api.NumassPoint
+import inr.numass.data.channel
+import inr.numass.data.storage.NumassDataLoader
+import inr.numass.data.storage.NumassStorageFactory
+
+fun main(args: Array<String>) {
+    val storage = NumassStorageFactory.buildLocal(Global, "D:\\Work\\Numass\\data\\2018_04\\Adiabacity_19\\", true, false)
+    val set = storage.optLoader("set_4").get() as NumassDataLoader
+    set.points.forEach { point ->
+        if (point.voltage == 18700.0) {
+            println("${point.index}:")
+            point.blocks.forEach {
+                println("\t${it.channel}: events: ${it.events.count()}, time: ${it.length}")
+            }
+        }
+    }
+
+    val point: NumassPoint = set.points.filter { it.index == 18 }.findFirst().get()
+    (0..99).forEach { bin ->
+        val times = point.events.filter { it.amp > 0 }.map { it.timeOffset }.toList()
+        val count = times.filter { it > bin.toDouble() / 10 * 1e9 && it < (bin + 1).toDouble() / 10 * 1e9 }.count()
+        println("${bin.toDouble() / 10.0}: $count")
+    }
+}
\ No newline at end of file
diff --git a/numass-viewer/build.gradle b/numass-viewer/build.gradle
index 3137acee..79d2723e 100644
--- a/numass-viewer/build.gradle
+++ b/numass-viewer/build.gradle
@@ -12,7 +12,7 @@ if (!hasProperty('mainClass')) {
 
 mainClassName = mainClass
 
-version = "0.5.0"
+version = "0.5.1 - SNAPSHOT"
 
 description = "The viewer for numass data"
 
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
index 457def19..16ac0f3e 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/AmplitudeView.kt
@@ -6,8 +6,11 @@ import hep.dataforge.fx.runGoal
 import hep.dataforge.fx.ui
 import hep.dataforge.goals.Goal
 import hep.dataforge.kodex.configure
+import hep.dataforge.kodex.toList
 import hep.dataforge.meta.Meta
 import hep.dataforge.plots.PlotFrame
+import hep.dataforge.plots.PlotGroup
+import hep.dataforge.plots.Plottable
 import hep.dataforge.plots.data.DataPlot
 import hep.dataforge.plots.jfreechart.JFreeChartFrame
 import hep.dataforge.tables.Adapters
@@ -15,7 +18,10 @@ import hep.dataforge.tables.Table
 import inr.numass.data.analyzers.NumassAnalyzer
 import inr.numass.data.analyzers.SimpleAnalyzer
 import inr.numass.data.analyzers.withBinning
+import inr.numass.data.api.MetaBlock
+import inr.numass.data.api.NumassBlock
 import inr.numass.data.api.NumassPoint
+import inr.numass.data.channel
 import javafx.beans.Observable
 import javafx.beans.binding.DoubleBinding
 import javafx.beans.property.SimpleBooleanProperty
@@ -30,7 +36,7 @@ import java.util.concurrent.ConcurrentHashMap
 
 class AmplitudeView(
         private val analyzer: NumassAnalyzer = SimpleAnalyzer(),
-        private val cache: MutableMap<NumassPoint, Table> = ConcurrentHashMap()
+        private val cache: MutableMap<NumassBlock, Table> = ConcurrentHashMap()
 ) : View(title = "Numass amplitude spectrum plot", icon = ImageView(dfIcon)) {
 
     private val frame: PlotFrame = JFreeChartFrame().configure {
@@ -45,9 +51,17 @@ class AmplitudeView(
             "units" to "Hz"
         }
         "legend.showComponent" to false
+    }.apply {
+        plots.configure {
+            "connectionType" to "step"
+            "thickness" to 2
+            "showLine" to true
+            "showSymbol" to false
+            "showErrors" to false
+        }.setType(DataPlot::class)
     }
 
-    val binningProperty = SimpleObjectProperty<Int>(20)
+    val binningProperty = SimpleObjectProperty(20)
     var binning by binningProperty
 
     val normalizeProperty = SimpleBooleanProperty(true)
@@ -68,7 +82,7 @@ class AmplitudeView(
     }
 
     private val data: ObservableMap<String, NumassPoint> = FXCollections.observableHashMap()
-    private val plots: ObservableMap<String, Goal<DataPlot>> = FXCollections.observableHashMap()
+    private val plots: ObservableMap<String, Goal<Plottable>> = FXCollections.observableHashMap()
 
     val isEmpty = booleanBinding(data) { data.isEmpty() }
 
@@ -83,7 +97,6 @@ class AmplitudeView(
 
     }
 
-
     init {
         data.addListener { _: Observable ->
             invalidate()
@@ -106,7 +119,7 @@ class AmplitudeView(
     /**
      * Calculate or get spectrum from the immutable
      */
-    private suspend fun getSpectrum(point: NumassPoint): Table {
+    private fun getSpectrum(point: NumassBlock): Table {
         return cache.computeIfAbsent(point) { analyzer.getAmplitudeSpectrum(point, Meta.empty()) }
     }
 
@@ -114,33 +127,56 @@ class AmplitudeView(
      * Put or replace current plot with name `key`
      */
     fun add(key: String, point: NumassPoint) {
-        data.put(key, point)
+        data[key] = point
     }
 
     fun addAll(data: Map<String, NumassPoint>) {
         this.data.putAll(data);
     }
 
+    /**
+     * Distinct map of channel number to corresponding grouping block
+     */
+    private fun NumassPoint.getChannels(): Map<Int, NumassBlock> {
+        return blocks.toList().groupBy { it.channel ?: 0 }.mapValues { entry ->
+            if (entry.value.size == 1) {
+                entry.value.first()
+            } else {
+                MetaBlock(entry.value)
+            }
+        }
+    }
+
     private fun invalidate() {
         data.forEach { key, point ->
             plots.computeIfAbsent(key) {
-                runGoal("loadAmplitudeSpectrum_$key") {
+                runGoal<Plottable>("loadAmplitudeSpectrum_$key") {
                     val valueAxis = if (normalize) {
                         NumassAnalyzer.COUNT_RATE_KEY
                     } else {
                         NumassAnalyzer.COUNT_KEY
                     }
-                    DataPlot.plot(
-                            key,
-                            Adapters.buildXYAdapter(NumassAnalyzer.CHANNEL_KEY, valueAxis),
-                            getSpectrum(point).withBinning(binning)
-                    ).configure {
-                        "connectionType" to "step"
-                        "thickness" to 2
-                        "showLine" to true
-                        "showSymbol" to false
-                        "showErrors" to false
-                        "JFreeChart.cache" to true
+                    val adapter = Adapters.buildXYAdapter(NumassAnalyzer.CHANNEL_KEY, valueAxis)
+
+                    val channels = point.getChannels()
+
+                    return@runGoal if (channels.size == 1) {
+                        DataPlot.plot(
+                                key,
+                                adapter,
+                                getSpectrum(point).withBinning(binning)
+                        )
+                    } else {
+                        val group = PlotGroup.typed<DataPlot>(key)
+                        channels.forEach { key, block ->
+                            val plot = DataPlot.plot(
+                                    key.toString(),
+                                    adapter,
+                                    getSpectrum(block).withBinning(binning)
+                            )
+                            group.add(plot)
+                        }
+                        group
                     }
                 } ui { plot ->
                     frame.add(plot)
diff --git a/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt b/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
index d52e39d1..8eda13bf 100644
--- a/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
+++ b/numass-viewer/src/main/kotlin/inr/numass/viewer/StorageView.kt
@@ -9,6 +9,7 @@ import hep.dataforge.storage.api.Loader
 import hep.dataforge.storage.api.Storage
 import hep.dataforge.storage.api.TableLoader
 import hep.dataforge.storage.commons.StorageManager
+import hep.dataforge.tables.Table
 import inr.numass.NumassProperties
 import inr.numass.data.api.NumassPoint
 import inr.numass.data.api.NumassSet
@@ -29,6 +30,7 @@ import org.controlsfx.control.StatusBar
 import tornadofx.*
 import java.io.File
 import java.net.URI
+import java.util.concurrent.ConcurrentHashMap
 import kotlin.streams.toList
 
 class StorageView(private val context: Context = Global) : View(title = "Numass storage", icon = ImageView(dfIcon)) {
@@ -43,8 +45,10 @@ class StorageView(private val context: Context = Global) : View(title = "Numass
 
     private val statusBar = StatusBar();
 
-    private val ampView: AmplitudeView by inject();
-    private val spectrumView: SpectrumView by inject();
+    private val cache: MutableMap<NumassPoint, Table> = ConcurrentHashMap()
+
+    private val ampView: AmplitudeView by inject(params = mapOf("cache" to cache));
+    private val spectrumView: SpectrumView by inject(params = mapOf("cache" to cache));
     private val hvView: HVView by inject();
     private val scView: SlowControlView by inject();
 
@@ -122,7 +126,7 @@ class StorageView(private val context: Context = Global) : View(title = "Numass
                     isSelected = false
                     LogFragment().apply {
                         addLogHandler(context.logger)
-                        bindWindow(this@togglebutton, selectedProperty())
+                        bindWindow(this@togglebutton)
                     }
                 }
             }
@@ -263,15 +267,6 @@ class StorageView(private val context: Context = Global) : View(title = "Numass
                 else -> throw IllegalArgumentException("Unknown content type: ${content::class.java}");
             }
 
-
-//    private fun getSetName(value: NumassSet): String {
-//        return if (value is NumassDataLoader) {
-//            value.path
-//        } else {
-//            value.name
-//        }
-//    }
-
     private fun loadDirectory(path: URI) {
         statusBar.text = "Loading storage: $path"
         runGoal("loadDirectory[$path]") {
@@ -289,22 +284,4 @@ class StorageView(private val context: Context = Global) : View(title = "Numass
         }
     }
 
-//    fun setRootStorage(root: Storage) {
-//        runGoal("loadStorage[${root.name}]") {
-//            title = "Fill data to UI (" + root.name + ")"
-//            progress = -1.0
-//            runLater { statusBar.progress = -1.0 }
-//
-//            message = "Loading numass storage tree..."
-//
-//            runLater {
-//                storage = root
-//            }
-//
-//            //            callback.setProgress(1, 1);
-//            runLater { statusBar.progress = 0.0 }
-//            message = "Numass storage tree loaded."
-//            progress = 1.0
-//        }
-//    }
 }