diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/App.kt b/app/src/main/java/pl/szczodrzynski/edziennik/App.kt
index b3772fd9..6bd6934a 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/App.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/App.kt
@@ -43,10 +43,7 @@ import pl.szczodrzynski.edziennik.sync.SyncWorker
 import pl.szczodrzynski.edziennik.sync.UpdateWorker
 import pl.szczodrzynski.edziennik.ui.modules.base.CrashActivity
 import pl.szczodrzynski.edziennik.utils.*
-import pl.szczodrzynski.edziennik.utils.managers.GradesManager
-import pl.szczodrzynski.edziennik.utils.managers.NotificationChannelsManager
-import pl.szczodrzynski.edziennik.utils.managers.TimetableManager
-import pl.szczodrzynski.edziennik.utils.managers.UserActionManager
+import pl.szczodrzynski.edziennik.utils.managers.*
 import java.util.concurrent.TimeUnit
 import kotlin.coroutines.CoroutineContext
 
@@ -67,6 +64,7 @@ class App : MultiDexApplication(), Configuration.Provider, CoroutineScope {
     val userActionManager by lazy { UserActionManager(this) }
     val gradesManager by lazy { GradesManager(this) }
     val timetableManager by lazy { TimetableManager(this) }
+    val eventManager by lazy { EventManager(this) }
 
     val db
         get() = App.db
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt b/app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt
index 47a951fd..5a39dec5 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt
@@ -55,9 +55,10 @@ import pl.szczodrzynski.edziennik.ui.dialogs.sync.SyncViewListDialog
 import pl.szczodrzynski.edziennik.ui.modules.agenda.AgendaFragment
 import pl.szczodrzynski.edziennik.ui.modules.announcements.AnnouncementsFragment
 import pl.szczodrzynski.edziennik.ui.modules.attendance.AttendanceFragment
-import pl.szczodrzynski.edziennik.ui.modules.base.DebugFragment
 import pl.szczodrzynski.edziennik.ui.modules.base.MainSnackbar
 import pl.szczodrzynski.edziennik.ui.modules.behaviour.BehaviourFragment
+import pl.szczodrzynski.edziennik.ui.modules.debug.DebugFragment
+import pl.szczodrzynski.edziennik.ui.modules.debug.LabFragment
 import pl.szczodrzynski.edziennik.ui.modules.error.ErrorSnackbar
 import pl.szczodrzynski.edziennik.ui.modules.feedback.FeedbackFragment
 import pl.szczodrzynski.edziennik.ui.modules.feedback.HelpFragment
@@ -73,7 +74,6 @@ import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesListFragment
 import pl.szczodrzynski.edziennik.ui.modules.notifications.NotificationsListFragment
 import pl.szczodrzynski.edziennik.ui.modules.settings.ProfileManagerFragment
 import pl.szczodrzynski.edziennik.ui.modules.settings.SettingsNewFragment
-import pl.szczodrzynski.edziennik.ui.modules.template.TemplateFragment
 import pl.szczodrzynski.edziennik.ui.modules.timetable.TimetableFragment
 import pl.szczodrzynski.edziennik.ui.modules.webpush.WebPushFragment
 import pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoTouch
@@ -130,7 +130,7 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
         const val TARGET_MESSAGES_DETAILS = 503
         const val TARGET_MESSAGES_COMPOSE = 504
         const val TARGET_WEB_PUSH = 140
-        const val TARGET_TEMPLATE = 1000
+        const val TARGET_LAB = 1000
 
         const val HOME_ID = DRAWER_ITEM_HOME
 
@@ -230,8 +230,8 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
             list += NavTarget(TARGET_WEB_PUSH, R.string.menu_web_push, WebPushFragment::class)
             list += NavTarget(DRAWER_ITEM_DEBUG, R.string.menu_debug, DebugFragment::class)
             if (App.devMode) {
-                list += NavTarget(TARGET_TEMPLATE, R.string.menu_template, TemplateFragment::class)
-                        .withIcon(CommunityMaterial.Icon2.cmd_test_tube_empty)
+                list += NavTarget(TARGET_LAB, R.string.menu_lab, LabFragment::class)
+                        .withIcon(CommunityMaterial.Icon.cmd_flask_outline)
                         .isInDrawer(true)
                         .isBelowSeparator(true)
                         .isStatic(true)
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Event.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Event.kt
index 4869903f..b811ff61 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Event.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Event.kt
@@ -93,7 +93,7 @@ open class Event(
     var attachmentNames: MutableList<String>? = null
 
     @Ignore
-    var showAsUnseen = false
+    var showAsUnseen: Boolean? = null
 
     val startTimeCalendar: Calendar
         get() = Calendar.getInstance().also { it.set(
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/day/DayDialog.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/day/DayDialog.kt
index 12b7c71a..03cc4879 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/day/DayDialog.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/day/DayDialog.kt
@@ -151,6 +151,7 @@ class DayDialog(
                 showType = true,
                 showTime = true,
                 showSubject = true,
+                markAsSeen = true,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventListAdapter.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventListAdapter.kt
index cf63e4ea..34cc6a2d 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventListAdapter.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventListAdapter.kt
@@ -9,11 +9,15 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.db.full.EventFull
 import pl.szczodrzynski.edziennik.databinding.EventListItemBinding
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Week
+import kotlin.coroutines.CoroutineContext
 
 class EventListAdapter(
         val context: Context,
@@ -23,11 +27,17 @@ class EventListAdapter(
         val showType: Boolean = true,
         val showTime: Boolean = true,
         val showSubject: Boolean = true,
+        val markAsSeen: Boolean = true,
         val onItemClick: ((event: EventFull) -> Unit)? = null,
         val onEventEditClick: ((event: EventFull) -> Unit)? = null
-) : RecyclerView.Adapter<EventListAdapter.ViewHolder>() {
+) : RecyclerView.Adapter<EventListAdapter.ViewHolder>(), CoroutineScope {
 
-    private val app by lazy { context.applicationContext as App }
+    private val app = context.applicationContext as App
+    private val manager = app.eventManager
+
+    private val job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
 
     var items = listOf<EventFull>()
 
@@ -40,9 +50,17 @@ class EventListAdapter(
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val event = items[position]
         val b = holder.b
+        val manager = app.eventManager
 
         b.root.onClick {
             onItemClick?.invoke(event)
+            if (!event.seen) {
+                manager.markAsSeen(event)
+            }
+            if (event.showAsUnseen == true) {
+                event.showAsUnseen = false
+                notifyItemChanged(event)
+            }
         }
 
         val bullet = " • "
@@ -85,6 +103,22 @@ class EventListAdapter(
         b.editButton.attachToastHint(R.string.hint_edit_event)
 
         b.isDone.isVisible = event.isDone
+
+        if (event.showAsUnseen == null)
+            event.showAsUnseen = !event.seen
+
+        b.unread.isVisible = event.showAsUnseen == true
+        if (markAsSeen && !event.seen) {
+            manager.markAsSeen(event)
+        }
+    }
+
+    private fun notifyItemChanged(model: Any) {
+        startCoroutineTimer(1000L, 0L) {
+            val index = items.indexOf(model)
+            if (index != -1)
+                notifyItemChanged(index)
+        }
     }
 
     override fun getItemCount() = items.size
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt
index 51b0eb03..6dc6edb6 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt
@@ -175,6 +175,7 @@ class LessonDetailsDialog(
                 showType = true,
                 showTime = true,
                 showSubject = true,
+                markAsSeen = true,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/DebugFragment.java b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/DebugFragment.java
similarity index 98%
rename from app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/DebugFragment.java
rename to app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/DebugFragment.java
index 57a4e00f..63ef7f51 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/DebugFragment.java
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/DebugFragment.java
@@ -1,4 +1,8 @@
-package pl.szczodrzynski.edziennik.ui.modules.base;
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-3.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.debug;
 
 import android.os.Bundle;
 import android.util.Log;
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/LabFragment.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/LabFragment.kt
new file mode 100644
index 00000000..7fbea1a6
--- /dev/null
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/debug/LabFragment.kt
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-3.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.debug
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.MainActivity
+import pl.szczodrzynski.edziennik.data.db.entity.Event
+import pl.szczodrzynski.edziennik.databinding.LabFragmentBinding
+import pl.szczodrzynski.edziennik.onClick
+import kotlin.coroutines.CoroutineContext
+
+class LabFragment : Fragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "LabFragment"
+    }
+
+    private lateinit var app: App
+    private lateinit var activity: MainActivity
+    private lateinit var b: LabFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        activity = (getActivity() as MainActivity?) ?: return null
+        context ?: return null
+        app = activity.application as App
+        b = LabFragmentBinding.inflate(inflater)
+        return b.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        if (!isAdded) return
+
+        b.last10unseen.onClick {
+            launch(Dispatchers.Default) {
+                val events = app.db.eventDao().getAllNow(App.profileId)
+                val ids = events.sortedBy { it.date }.filter { it.type == Event.TYPE_HOMEWORK }.takeLast(10)
+                ids.forEach {
+                    app.db.metadataDao().setSeen(App.profileId, it, false)
+                }
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/home/cards/HomeEventsCard.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/home/cards/HomeEventsCard.kt
index b0c8ec79..9a831c0f 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/home/cards/HomeEventsCard.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/home/cards/HomeEventsCard.kt
@@ -65,6 +65,7 @@ class HomeEventsCard(
                 showType = true,
                 showTime = false,
                 showSubject = false,
+                markAsSeen = false,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkListFragment.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkListFragment.kt
index ba02cb6d..525d31c5 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkListFragment.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkListFragment.kt
@@ -60,6 +60,7 @@ class HomeworkListFragment : LazyFragment(), CoroutineScope {
                 showType = false,
                 showTime = true,
                 showSubject = true,
+                markAsSeen = true,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/utils/managers/EventManager.kt b/app/src/main/java/pl/szczodrzynski/edziennik/utils/managers/EventManager.kt
new file mode 100644
index 00000000..ca444ca5
--- /dev/null
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/utils/managers/EventManager.kt
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-4-3.
+ */
+
+package pl.szczodrzynski.edziennik.utils.managers
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.data.db.full.EventFull
+import pl.szczodrzynski.edziennik.startCoroutineTimer
+import kotlin.coroutines.CoroutineContext
+
+class EventManager(val app: App) : CoroutineScope {
+
+    private val job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Default
+
+    /*    _    _ _____    _____                 _  __ _
+         | |  | |_   _|  / ____|               (_)/ _(_)
+         | |  | | | |   | (___  _ __   ___  ___ _| |_ _  ___
+         | |  | | | |    \___ \| '_ \ / _ \/ __| |  _| |/ __|
+         | |__| |_| |_   ____) | |_) |  __/ (__| | | | | (__
+          \____/|_____| |_____/| .__/ \___|\___|_|_| |_|\___|
+                               | |
+                               |*/
+    fun markAsSeen(event: EventFull) {
+        event.seen = true
+        startCoroutineTimer(500L, 0L) {
+            app.db.metadataDao().setSeen(event.profileId, event, true)
+        }
+    }
+}
diff --git a/app/src/main/res/layout/event_list_item.xml b/app/src/main/res/layout/event_list_item.xml
index 62c0922e..295ffdc2 100644
--- a/app/src/main/res/layout/event_list_item.xml
+++ b/app/src/main/res/layout/event_list_item.xml
@@ -36,13 +36,23 @@
 
             <TextView
                 android:id="@+id/details"
-                android:layout_width="match_parent"
+                android:layout_width="0dp"
                 android:layout_height="wrap_content"
+                android:layout_weight="1"
                 android:textAppearance="@style/NavView.TextView.Helper"
                 android:textSize="16sp"
                 android:maxLines="2"
                 tools:text="sprawdzian • 9:05 • historia i społeczeństwo" />
 
+            <View
+                android:id="@+id/unread"
+                android:layout_width="12dp"
+                android:layout_height="12dp"
+                android:layout_marginHorizontal="4dp"
+                android:visibility="gone"
+                android:background="@drawable/unread_red_circle"
+                tools:visibility="visible"/>
+
         </LinearLayout>
 
         <LinearLayout
@@ -81,6 +91,7 @@
                 android:layout_gravity="top"
                 android:layout_marginLeft="4dp"
                 android:layout_marginRight="4dp"
+                android:visibility="gone"
                 app:iiv_color="@color/md_green_500"
                 app:iiv_icon="cmd-check"
                 tools:background="@sample/check" />
diff --git a/app/src/main/res/layout/fragment_debug.xml b/app/src/main/res/layout/fragment_debug.xml
index 6dd2413c..2fecffa5 100644
--- a/app/src/main/res/layout/fragment_debug.xml
+++ b/app/src/main/res/layout/fragment_debug.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".ui.modules.base.DebugFragment">
+    tools:context=".ui.modules.debug.DebugFragment">
 
     <!-- TODO: Update blank fragment layout -->
     <com.google.android.material.textfield.TextInputLayout
diff --git a/app/src/main/res/layout/lab_fragment.xml b/app/src/main/res/layout/lab_fragment.xml
new file mode 100644
index 00000000..e664e76c
--- /dev/null
+++ b/app/src/main/res/layout/lab_fragment.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-4-3.
+  -->
+
+<layout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    tools:ignore="HardcodedText">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="8dp"
+            android:layout_marginVertical="8dp"
+            android:orientation="vertical">
+
+            <!--<com.google.android.material.tabs.TabLayout
+                android:id="@+id/tabLayout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@color/colorSurface_6dp"
+                app:tabIndicatorColor="?colorPrimary"
+                app:tabMode="auto"
+                app:tabSelectedTextColor="?colorPrimary"
+                app:tabTextColor="?android:textColorPrimary" />-->
+
+            <!--<pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyViewPager
+                android:id="@+id/viewPager"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                app:layout_behavior="@string/appbar_scrolling_view_behavior" />-->
+
+            <Button
+                android:id="@+id/last10unseen"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Set last 10 as unseen"
+                android:textAllCaps="false" />
+        </LinearLayout>
+    </ScrollView>
+</layout>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 6281da7e..423df0a0 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1286,4 +1286,5 @@
     <string name="dialog_event_details_body">Treść</string>
     <string name="dialog_event_details_attachments">Załączniki</string>
     <string name="hint_download_again">Pobierz ponownie</string>
+    <string name="menu_lab">Laboratorium</string>
 </resources>