Flight Engineer displayability also takes into account the main canvas enabled state (hides on F2).
Flight Engineer displayability also takes into account the main canvas enabled state (hides on F2).

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--- a/Assets/Scenes/main.unity
+++ b/Assets/Scenes/main.unity
@@ -152,6 +152,165 @@
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+      value: 250
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+      value: 25
+      objectReference: {fileID: 0}
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+      propertyPath: m_Color.a
+      value: .784313738
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 GameObject:
   m_ObjectHideFlags: 0
@@ -310,6 +469,7 @@
   m_Children:
   - {fileID: 2037475081}
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+  - {fileID: 1026898450}
   m_Father: {fileID: 0}
   m_RootOrder: 1
   m_AnchorMin: {x: 0, y: 0}

--- a/KerbalEngineer.CSharp.Editor.csproj
+++ b/KerbalEngineer.CSharp.Editor.csproj
@@ -55,9 +55,6 @@
     <Reference Include="UnityEditor">
       <HintPath>Library\UnityAssemblies\UnityEditor.dll</HintPath>
     </Reference>
-    <Reference Include="UnityEngine.Advertisements">
-      <HintPath>Library\UnityAssemblies\UnityEngine.Advertisements.dll</HintPath>
-    </Reference>
     <Reference Include="UnityEditor.Advertisements">
       <HintPath>Library\UnityAssemblies\UnityEditor.Advertisements.dll</HintPath>
     </Reference>
@@ -72,9 +69,6 @@
     </Reference>
     <Reference Include="UnityEditor.Networking">
       <HintPath>Library\UnityAssemblies\UnityEditor.Networking.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEngine.Analytics">
-      <HintPath>Library\UnityAssemblies\UnityEngine.Analytics.dll</HintPath>
     </Reference>
     <Reference Include="UnityEditor.Graphs">
       <HintPath>Library\UnityAssemblies\UnityEditor.Graphs.dll</HintPath>
@@ -112,32 +106,14 @@
     <Reference Include="SyntaxTree.VisualStudio.Unity.Bridge">
       <HintPath>Library\UnityAssemblies\SyntaxTree.VisualStudio.Unity.Bridge.dll</HintPath>
     </Reference>
-    <Reference Include="UnityEditor.Networking">
-      <HintPath>Library\UnityAssemblies\UnityEditor.Networking.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEngine.Advertisements">
-      <HintPath>Library\UnityAssemblies\UnityEngine.Advertisements.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEditor.UI">
-      <HintPath>Library\UnityAssemblies\UnityEditor.UI.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEngine.Analytics">
-      <HintPath>Library\UnityAssemblies\UnityEngine.Analytics.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEngine.Networking">
-      <HintPath>Library\UnityAssemblies\UnityEngine.Networking.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEditor.Advertisements">
-      <HintPath>Library\UnityAssemblies\UnityEditor.Advertisements.dll</HintPath>
-    </Reference>
-    <Reference Include="UnityEngine.UI">
-      <HintPath>Library\UnityAssemblies\UnityEngine.UI.dll</HintPath>
-    </Reference>
     <Reference Include="Mono.Cecil">
       <HintPath>Library\UnityAssemblies\Mono.Cecil.dll</HintPath>
     </Reference>
     <Reference Include="UnityEditor.iOS.Extensions.Xcode">
       <HintPath>Library\UnityAssemblies\UnityEditor.iOS.Extensions.Xcode.dll</HintPath>
+    </Reference>
+    <Reference Include="KerbalEngineer.Unity">
+      <HintPath>Assets\Plugins\KerbalEngineer.Unity.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>

--- /dev/null
+++ b/KerbalEngineer.Unity/CanvasGroupFader.cs
@@ -1,1 +1,88 @@
+namespace KerbalEngineer.Unity
+{
+    using System;
+    using System.Collections;
+    using UnityEngine;
 
+    [RequireComponent(typeof(CanvasGroup))]
+    public class CanvasGroupFader : MonoBehaviour
+    {
+        private CanvasGroup m_CanvasGroup;
+        private IEnumerator m_FadeCoroutine;
+
+        public bool fading
+        {
+            get
+            {
+                return m_FadeCoroutine != null;
+            }
+        }
+
+        /// <summary>
+        ///     Fades the canvas group to a specified alpha using the supplied blocking state during fade with optional callback.
+        /// </summary>
+        public void FadeTo(float alpha, float duration, Action callback = null)
+        {
+            if (m_CanvasGroup == null)
+            {
+                return;
+            }
+
+            Fade(m_CanvasGroup.alpha, alpha, duration, callback);
+        }
+
+        /// <summary>
+        ///     Sets the alpha value of the canvas group.
+        /// </summary>
+        public void SetAlpha(float alpha)
+        {
+            if (m_CanvasGroup == null)
+            {
+                return;
+            }
+
+            alpha = Mathf.Clamp01(alpha);
+            m_CanvasGroup.alpha = alpha;
+        }
+
+        protected virtual void Awake()
+        {
+            // cache components
+            m_CanvasGroup = GetComponent<CanvasGroup>();
+        }
+
+        /// <summary>
+        ///     Starts a fade from one alpha value to another with callback.
+        /// </summary>
+        private void Fade(float from, float to, float duration, Action callback)
+        {
+            if (m_FadeCoroutine != null)
+            {
+                StopCoroutine(m_FadeCoroutine);
+            }
+
+            m_FadeCoroutine = FadeCoroutine(from, to, duration, callback);
+            StartCoroutine(m_FadeCoroutine);
+        }
+
+        /// <summary>
+        ///     Coroutine that handles the fading.
+        /// </summary>
+        private IEnumerator FadeCoroutine(float from, float to, float duration, Action callback)
+        {
+            float progress = 0.0f;
+
+            while (progress <= 1.0f)
+            {
+                progress += Time.deltaTime / duration;
+                SetAlpha(Mathf.Lerp(from, to, progress));
+                yield return null;
+            }
+
+            print(m_CanvasGroup.alpha);
+            callback?.Invoke();
+
+            m_FadeCoroutine = null;
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer.Unity/Flight/FlightEngineerMenu.cs
@@ -1,1 +1,98 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2016 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//  
 
+namespace KerbalEngineer.Unity.Flight
+{
+    using KerbalEngineer.Flight;
+    using UnityEngine;
+    using UnityEngine.EventSystems;
+
+    public class FlightEngineerMenu : CanvasGroupFader, IPointerEnterHandler, IPointerExitHandler
+    {
+        [SerializeField]
+        private float m_FastFadeDuration = 0.2f;
+
+        [SerializeField]
+        private float m_SlowFadeDuration = 1.0f;
+
+        public void OnPointerEnter(PointerEventData eventData)
+        {
+            FadeIn();
+        }
+
+        public void OnPointerExit(PointerEventData eventData)
+        {
+            // slow-fade out if the application launcher button is off
+            if (FlightAppLauncher.instance != null && FlightAppLauncher.instance.isOn == false)
+            {
+                FadeTo(0.0f, m_SlowFadeDuration, Destroy);
+            }
+        }
+
+        protected override void Awake()
+        {
+            base.Awake();
+
+            // subscribe events
+            FlightAppLauncher.MenuClosed += MenuClosed;
+            FlightAppLauncher.ButtonHover += ButtonHover;
+        }
+
+        protected virtual void OnDestroy()
+        {
+            // unsubscribe events
+            FlightAppLauncher.MenuClosed -= MenuClosed;
+            FlightAppLauncher.ButtonHover -= ButtonHover;
+        }
+
+        protected virtual void OnEnable()
+        {
+            // set starting alpha to zero and fade in
+            SetAlpha(0.0f);
+            FadeIn();
+        }
+
+        /// <summary>
+        ///     Called when the application launcher button is hovered over.
+        /// </summary>
+        private void ButtonHover()
+        {
+            FadeIn();
+        }
+
+        /// <summary>
+        ///     Destroys the game object.
+        /// </summary>
+        private void Destroy()
+        {
+            // disable game object first due to an issue within unity 5.2.4f1 that shows a single frame at full opaque alpha just before destruction
+            gameObject.SetActive(false);
+            Destroy(gameObject);
+        }
+
+        private void FadeIn()
+        {
+            FadeTo(1.0f, m_FastFadeDuration);
+        }
+
+        private void MenuClosed()
+        {
+            FadeTo(0.0f, m_FastFadeDuration, Destroy);
+        }
+    }
+}

--- /dev/null
+++ b/KerbalEngineer.Unity/KerbalEngineer.Unity.csproj
@@ -1,1 +1,70 @@
-
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{5387BB1E-32B1-4BAC-B03F-100570B9554C}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>KerbalEngineer.Unity</RootNamespace>
+    <AssemblyName>KerbalEngineer.Unity</AssemblyName>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>none</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>..\Output\KerbalEngineer\</OutputPath>
+    <DefineConstants>
+    </DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="CanvasGroupFader.cs" />
+    <Compile Include="Flight\FlightEngineerMenu.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="System">
+      <HintPath>..\..\game\KSP_Data\Managed\System.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="UnityEngine">
+      <HintPath>..\..\game\KSP_Data\Managed\UnityEngine.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="UnityEngine.UI">
+      <HintPath>..\..\game\KSP_Data\Managed\UnityEngine.UI.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\KerbalEngineer\KerbalEngineer.csproj">
+      <Project>{39806613-e0b7-46e0-89a6-a569ec538cbb}</Project>
+      <Name>KerbalEngineer</Name>
+      <Private>False</Private>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <PropertyGroup>
+    <PostBuildEvent>copy "$(TargetPath)" "$(SolutionDir)Assets\Plugins" /Y</PostBuildEvent>
+  </PropertyGroup>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

--- /dev/null
+++ b/KerbalEngineer.Unity/Properties/AssemblyInfo.cs
@@ -1,1 +1,10 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
 
+[assembly: AssemblyTitle("KerbalEngineer.Unity")]
+[assembly: AssemblyProduct("KerbalEngineer.Unity")]
+[assembly: AssemblyCopyright("Copyright © CYBUTEK 2016")]
+[assembly: ComVisible(false)]
+[assembly: Guid("5387bb1e-32b1-4bac-b03f-100570b9554c")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

--- a/KerbalEngineer.sln
+++ b/KerbalEngineer.sln
@@ -4,6 +4,8 @@
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "KerbalEngineer.CSharp.Editor", "KerbalEngineer.CSharp.Editor.csproj", "{D7B7C6CE-6B5A-CE40-5B7C-9D0E6583E469}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "KerbalEngineer", "KerbalEngineer\KerbalEngineer.csproj", "{39806613-E0B7-46E0-89A6-A569EC538CBB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "KerbalEngineer.Unity", "KerbalEngineer.Unity\KerbalEngineer.Unity.csproj", "{5387BB1E-32B1-4BAC-B03F-100570B9554C}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -19,6 +21,10 @@
 		{39806613-E0B7-46E0-89A6-A569EC538CBB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{39806613-E0B7-46E0-89A6-A569EC538CBB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{39806613-E0B7-46E0-89A6-A569EC538CBB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5387BB1E-32B1-4BAC-B03F-100570B9554C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5387BB1E-32B1-4BAC-B03F-100570B9554C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5387BB1E-32B1-4BAC-B03F-100570B9554C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5387BB1E-32B1-4BAC-B03F-100570B9554C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

--- a/KerbalEngineer/AppLauncherButton.cs
+++ b/KerbalEngineer/AppLauncherButton.cs
@@ -77,6 +77,23 @@
                 m_Button.Enable();
             }
         }
+        
+        /// <summary>
+        ///     Gets the anchor position for pop-up content.
+        /// </summary>
+        public Vector3 GetAnchor()
+        {
+            if (m_Button == null)
+            {
+                return Vector3.zero;
+            }
+            
+            Vector3 anchor = m_Button.GetAnchor();
+
+            anchor.x -= 3.0f;
+
+            return anchor;
+        }
 
         /// <summary>
         ///     Enables and sets the button to off.

--- a/KerbalEngineer/Flight/ActionMenu.cs
+++ b/KerbalEngineer/Flight/ActionMenu.cs
@@ -32,7 +32,7 @@
     /// <summary>
     ///     Graphical controller for section interaction in the form of a menu system.
     /// </summary>
-    [KSPAddon(KSPAddon.Startup.Flight, false)]
+    //[KSPAddon(KSPAddon.Startup.Flight, false)]
     public class ActionMenu : MonoBehaviour
     {
         #region Fields

--- a/KerbalEngineer/Flight/DisplayStack.cs
+++ b/KerbalEngineer/Flight/DisplayStack.cs
@@ -121,7 +121,6 @@
             try
             {
                 this.Save();
-                RenderingManager.RemoveFromPostDrawQueue(0, this.Draw);
             }
             catch (Exception ex)
             {
@@ -140,7 +139,6 @@
                 this.windowId = this.GetHashCode();
                 this.InitialiseStyles();
                 this.Load();
-                RenderingManager.AddToPostDrawQueue(0, this.Draw);
                 Logger.Log("ActionMenu->Start");
             }
             catch (Exception ex)
@@ -176,7 +174,7 @@
         /// <summary>
         ///     Called to draw the display stack when the UI is enabled.
         /// </summary>
-        private void Draw()
+        private void OnGUI()
         {
             try
             {

--- /dev/null
+++ b/KerbalEngineer/Flight/FlightAppLauncher.cs
@@ -1,1 +1,106 @@
+namespace KerbalEngineer.Flight
+{
+    using System;
+    using UnityEngine;
 
+    [KSPAddon(KSPAddon.Startup.Flight, false)]
+    public class FlightAppLauncher : AppLauncherButton
+    {
+        private static FlightAppLauncher m_Instance;
+        private GameObject m_MenuObject;
+        private GameObject m_MenuPrefab;
+
+        public static event Action ButtonHover;
+        public static event Action MenuClosed;
+
+        /// <summary>
+        ///     Gets the current instance of the FlightAppLauncher object.
+        /// </summary>
+        public static FlightAppLauncher instance
+        {
+            get
+            {
+                return m_Instance;
+            }
+        }
+
+        protected override void Awake()
+        {
+            base.Awake();
+
+            // set singleton instance
+            m_Instance = this;
+
+            // cache menu prefab
+            if (m_MenuPrefab == null && AssetBundleLoader.prefabs != null)
+            {
+                m_MenuPrefab = AssetBundleLoader.prefabs.LoadAsset<GameObject>("flight-menu");
+            }
+        }
+
+        protected override void OnFalse()
+        {
+            Close();
+        }
+
+        protected override void OnHover()
+        {
+            Open();
+            ButtonHover?.Invoke();
+        }
+
+        protected override void OnHoverOut()
+        {
+            if (isOn == false)
+            {
+                Close();
+            }
+        }
+
+        protected override void OnTrue()
+        {
+            Open();
+        }
+
+        /// <summary>
+        ///     Closes the menu.
+        /// </summary>
+        private void Close()
+        {
+            if (m_MenuObject == null)
+            {
+                return;
+            }
+
+            if (MenuClosed != null)
+            {
+                MenuClosed();
+            }
+            else
+            {
+                Destroy(m_MenuObject);
+            }
+        }
+
+        /// <summary>
+        ///     Opens the menu.
+        /// </summary>
+        private void Open()
+        {
+            if (m_MenuPrefab == null || m_MenuObject != null)
+            {
+                return;
+            }
+
+            // create object
+            m_MenuObject = Instantiate(m_MenuPrefab, GetAnchor(), Quaternion.identity) as GameObject;
+            if (m_MenuObject == null)
+            {
+                return;
+            }
+
+            // set object as a child of the main canvas
+            m_MenuObject.transform.SetParent(MainCanvasUtil.MainCanvas.transform);
+        }
+    }
+}

--- a/KerbalEngineer/Flight/FlightEngineerCore.cs
+++ b/KerbalEngineer/Flight/FlightEngineerCore.cs
@@ -113,6 +113,11 @@
         {
             get
             {
+                if (MainCanvasUtil.MainCanvas.enabled == false)
+                {
+                    return false;
+                }
+
                 if (isCareerMode)
                 {
                     if (isKerbalLimited && FlightGlobals.ActiveVessel.GetVesselCrew().Exists(c => c.experienceTrait.TypeName == "Engineer"))

 Binary files a/Output/KerbalEngineer/KerbalEngineer and b/Output/KerbalEngineer/KerbalEngineer differ
 Binary files /dev/null and b/Output/KerbalEngineer/KerbalEngineer.Unity.dll differ
 Binary files a/Output/KerbalEngineer/KerbalEngineer.dll and b/Output/KerbalEngineer/KerbalEngineer.dll differ
--- a/Output/KerbalEngineer/KerbalEngineer.manifest
+++ b/Output/KerbalEngineer/KerbalEngineer.manifest
@@ -2,6 +2,9 @@
 AssetBundleManifest:
   AssetBundleInfos:
     Info_0:
+      Name: prefabs
+      Dependencies: {}
+    Info_1:
       Name: images
       Dependencies: {}
 

 Binary files a/Output/KerbalEngineer/images and b/Output/KerbalEngineer/images differ
--- a/Output/KerbalEngineer/images.manifest
+++ b/Output/KerbalEngineer/images.manifest
@@ -1,9 +1,9 @@
 ManifestFileVersion: 0
-CRC: 343068190
+CRC: 2833314722
 Hashes:
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     serializedVersion: 2
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+    Hash: b45648c25b082800bed1fc56179dfff5
   TypeTreeHash:
     serializedVersion: 2
     Hash: 00ffc586b3c4c12c72c7fed589b81235

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--- /dev/null
+++ b/Output/KerbalEngineer/prefabs.manifest
@@ -1,1 +1,49 @@
+ManifestFileVersion: 0
+CRC: 909216554
+Hashes:
+  AssetFileHash:
+    serializedVersion: 2
+    Hash: dd3575f8562fec685c6a2d3ff59f045e
+  TypeTreeHash:
+    serializedVersion: 2
+    Hash: f4aef6f1ae036c4ba7253f0f0b1e7263
+HashAppended: 0
+ClassTypes:
+- Class: 1
+  Script: {instanceID: 0}
+- Class: 21
+  Script: {instanceID: 0}
+- Class: 28
+  Script: {instanceID: 0}
+- Class: 48
+  Script: {instanceID: 0}
+- Class: 114
+  Script: {fileID: 1392445389, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: 1741964061, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: -765806418, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: 1679637790, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: 708705254, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: 1297475563, guid: f5f67c52d1564df4a8936ccd202a3bd8, type: 3}
+- Class: 114
+  Script: {fileID: 2019631361, guid: a3a55138b08428847a08c7b48fe72efe, type: 3}
+- Class: 115
+  Script: {instanceID: 0}
+- Class: 128
+  Script: {instanceID: 0}
+- Class: 213
+  Script: {instanceID: 0}
+- Class: 222
+  Script: {instanceID: 0}
+- Class: 224
+  Script: {instanceID: 0}
+- Class: 225
+  Script: {instanceID: 0}
+Assets:
+- Assets/Prefabs/flight-menu.prefab
+Dependencies: []
 

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