diff --git a/Source/UI/Window/UIWindow.cpp b/Source/UI/Window/UIWindow.cpp
index c36468f2..91538697 100644
--- a/Source/UI/Window/UIWindow.cpp
+++ b/Source/UI/Window/UIWindow.cpp
@@ -1682,8 +1682,13 @@ const char* UIWindow::TruncateText(const char* text, int maxBytes) {
 }
 
 // OFFSET: 0x00A81FD0
+// FUNCTION: fn_16992
 void UIWindow::WrapTextWithBreaks(const char* text, std::vector<std::string>* lines, std::vector<bool>* breaks, int width) {
   using NextCharacter = const char* (__thiscall*)(InputCharset*, const char*, int);
+  if (!text) {
+    return;
+  }
+
   const int totalWidth = this->TextWidth(this->m_context->fonts, this->m_context->locale, text, 0, 0, 12, 0, 0);
   const int length = static_cast<int>(std::strlen(text));
   if (totalWidth <= 0) {
@@ -2487,295 +2492,6 @@ void UINavigationroadiconWnd::Paint() {
 }
 
 // OFFSET: 0x005C7CC0
-int UINavigationV4Wnd::SendMsg(UIWindow* sender, int message, std::intptr_t argument1, std::intptr_t argument2, std::intptr_t argument3, std::intptr_t argument4) {
-  switch (message) {
-  case 0:
-    if (sender == this->unknown_00E0 && static_cast<UIEditCtrl*>(this->unknown_00E0)->Length() > 0) {
-      this->SendMsg(this->unknown_00E0, 6, 0x141, 0, 0, 0);
-    }
-    break;
-  case 6:
-    if (argument1 != 0x150 && argument1 != 0x1B9) {
-      reinterpret_cast<WindowResponseRecorder*>(this)->Record(this->geometry.id, static_cast<int>(argument1), argument2, argument3, argument4);
-      if (argument1 > 499) {
-        break;
-      }
-      if (argument1 == 499) {
-        if (!g_windowMgr.LookupWindow(6)) {
-          UIPrivateAirplaneWnd* window = new UIPrivateAirplaneWnd();
-          window->SetSize(0xD0, 0x6E);
-          window->Move(static_cast<int>((g_renderer->viewport.width - 0xD0) * 0.5), static_cast<int>((g_renderer->viewport.height - 0x6E) * 0.5));
-          g_windowMgr.AddRendered(window);
-          if (g_navigationManager.GetCurrentTargetType() == 2) {
-            window->SendMsg(nullptr, 0x9A, reinterpret_cast<std::intptr_t>(LookupMessage(0xD3B)), 0, 0, 0);
-          }
-
-          std::string mapName = static_cast<CGameMode*>(g_modeMgr.GetGameMode())->MapName();
-          mapName = mapName.substr(0, mapName.find(".rsw")) + ".gat";
-          if (!g_privateAirplaneItems->IsStartableMap(mapName)) {
-            window->SendMsg(nullptr, 0x9A, reinterpret_cast<std::intptr_t>(LookupMessage(0xD03)), 0, 0, 0);
-            window->SendMsg(nullptr, 0x23, 0, 0, 0, 0);
-          }
-
-          std::string targetName = g_navigationManager.GetCurrentTargetName() + ".gat";
-          if (!g_privateAirplaneItems->IsEndableMap(targetName)) {
-            window->SendMsg(nullptr, 0x9A, reinterpret_cast<std::intptr_t>(LookupMessage(0xD04)), 0, 0, 0);
-            window->SendMsg(nullptr, 0x23, 0, 0, 0, 0);
-          }
-
-          if (mapName.compare(targetName) == 0) {
-            window->SendMsg(nullptr, 0x9A, reinterpret_cast<std::intptr_t>(LookupMessage(0xD19)), 0, 0, 0);
-            window->SendMsg(nullptr, 0x23, 0, 0, 0, 0);
-          }
-
-          CGameMode* mode = static_cast<CGameMode*>(g_modeMgr.GetGameMode());
-          if (mode->scene && static_cast<CGameMode*>(g_modeMgr.GetGameMode())->scene->player &&
-              static_cast<CGameMode*>(g_modeMgr.GetGameMode())->scene->player->render.unknown_0070 == 3) {
-            window->SendMsg(nullptr, 0x9A, reinterpret_cast<std::intptr_t>(LookupMessage(0xD1A)), 0, 0, 0);
-            window->SendMsg(nullptr, 0x23, 0, 0, 0, 0);
-          }
-
-          g_windowMgr.window_4F258 = window;
-          if (reinterpret_cast<WindowDialogs*>(&g_windowMgr)->RunModal(window) == 0xBC) {
-            g_windowMgr.window_4F258 = nullptr;
-          }
-        }
-        break;
-      }
-    }
-
-    switch (argument1) {
-    case 0xBD:
-      if (!g_windowMgr.CloseWindow(0x132)) {
-        g_windowMgr.EnsureWindow(0x132);
-      }
-      break;
-    case 0xBF: {
-      if (g_closeChatAfterGroups != 0) {
-        g_windowMgr.CloseWindow(0x1A);
-      }
-      for (std::string& text : this->unknown_0104) {
-        text.clear();
-      }
-      this->unknown_0104.erase(this->unknown_0104.begin(), this->unknown_0104.end());
-
-      const std::string directory = FormatOwnedString("%s\\Navigationdata\\", g_applicationDirectory);
-      EnumerateFileNames(this->unknown_0104, directory.c_str(), "*.txt");
-      const int count = static_cast<int>(this->unknown_0104.size());
-      if (count != 0) {
-        UIWindow* history = g_windowMgr.EnsureWindow(0x1A);
-        for (const std::string& name : this->unknown_0104) {
-          history->SendMsg(nullptr, 0x1F, reinterpret_cast<std::intptr_t>(name.c_str()), 0, 0, 0);
-        }
-        const int height = (std::min)(count * 0x10, 0xA0);
-        history->SendMsg(nullptr, 0x28, 0, 0, 0, 0);
-        history->Resize(0xA0, height);
-        history->SendMsg(nullptr, 0x53, 0xCB, 0, 0, 0);
-        int x = this->geometry.width - 0xA5;
-        int y = 0x24;
-        this->ToScreen(x, y);
-        history->Move(x, y);
-      }
-      break;
-    }
-    case 0xC8:
-      g_navigationMinimized = false;
-      this->geometry.targetAlpha = 0xFF;
-      this->geometry.alphaStart = timeGetTime();
-      g_navigationHidden = false;
-      this->RefreshLayout();
-      break;
-    case 0xC9:
-      if (g_navigationMode == 2) {
-        if (reinterpret_cast<WindowDialogs*>(&g_windowMgr)->Confirm(LookupMessage(0x8BF), 2, true, false, 0, "Message", 0x118, 0x78, 0) == 0xBB) {
-          g_navigationManager.SetViewMode(1);
-          g_navigationTab = 0;
-          g_navigationManager.ClearSavedTarget();
-          g_windowMgr.CloseWindow(0x13A);
-          this->RefreshLayout();
-          g_worldViewMgr.ClearMarks();
-        }
-      } else {
-        if (g_windowMgr.window_0428) {
-          this->SendMsg(nullptr, 6, 0xCA, 0, 0, 0);
-        }
-        g_navigationTab = 0;
-        g_navigationMinimized = false;
-        g_navigationManager.Reset(true);
-        g_worldViewMgr.ClearMarks();
-        g_worldViewMgr.ClearLevels();
-        g_worldViewMgr.ResetSelection();
-        g_windowMgr.CloseWindow(0x13A);
-        g_windowMgr.CloseWindow(0xCB);
-      }
-      break;
-    case 0xCA:
-      g_navigationMinimized = true;
-      this->geometry.targetAlpha = 0xAA;
-      this->geometry.alphaStart = timeGetTime();
-      if (g_windowMgr.window_0428) {
-        static_cast<UIRoMapWnd*>(g_windowMgr.window_0428)->UpdateNavigationButtons();
-      }
-      this->RefreshLayout();
-      break;
-    case 0xD5:
-      g_unknown16FC585 = false;
-      g_navigationFilter = argument2 != 0;
-      g_unknown16FC586 = g_navigationFilter;
-      break;
-    case 0x11C:
-      if (!g_navigationManager.GetSavedTarget().object) {
-        if (g_navigationTab == 2) {
-          if (g_navigationMode == 2) {
-            this->LayoutWithoutDetails();
-            g_navigationTab = 1;
-            g_navigationManager.SelectTarget(g_navigationManager.GetSelectedNode());
-          } else {
-            this->LayoutWithDetails();
-            g_navigationTab = 0;
-            g_navigationManager.SelectNodeState();
-          }
-        }
-        break;
-      }
-      if (g_navigationTab == 1 || (g_navigationTab == 2 && g_navigationMode != 2)) {
-        g_navigationTab = 0;
-        g_navigationManager.SelectNodeState();
-        this->RefreshLayout();
-        break;
-      }
-      g_navigationTab = 1;
-      g_navigationManager.SelectTarget(g_navigationManager.GetSelectedNode());
-      this->RefreshLayout();
-      break;
-    case 0x141:
-      if (static_cast<UIEditCtrl*>(this->unknown_00E0)->Length() != 0 && !g_navigationMinimized) {
-        g_navigationSearchText = static_cast<UIEditCtrl*>(this->unknown_00E0)->Text();
-        g_navigationManager.UpdateSearchResults();
-        this->unknown_00F0->Clear();
-        this->unknown_00F0->Invalidate();
-        g_navigationManager.ClearData();
-        g_navigationManager.LoadTargetPreview();
-        this->FillRouteGroups();
-        g_navigationTab = 0;
-        if (g_windowMgr.window_0428) {
-          static_cast<UINavigationWnd*>(g_windowMgr.window_0428)->RefreshWorldMapLevels();
-        }
-        this->LayoutWithDetails();
-        reinterpret_cast<CLanguage*>(g_serverLanguage)->ResetInput();
-      }
-      break;
-    case 0x150:
-      if (g_replayAnimationScaling == 0) {
-        argument2 = this->unknown_00EC->selected;
-      }
-      this->SelectRoute(static_cast<int>(argument2));
-      if (argument2 != -1) {
-        g_navigationSelectedNode = 0;
-        if (!g_navigationManager.SelectNodeState()) {
-          g_navigationSelectedNode = 0;
-          g_navigationManager.SelectNodeState();
-        }
-        this->unknown_00F0->selected = g_navigationSelectedNode;
-        this->unknown_00F0->Invalidate();
-        if (g_windowMgr.window_0428) {
-          static_cast<UINavigationWnd*>(g_windowMgr.window_0428)->RefreshWorldMapSelection();
-        }
-        this->Invalidate();
-        reinterpret_cast<WindowResponseRecorder*>(this)->Record(this->geometry.id, static_cast<int>(argument1), argument2, argument3, argument4);
-      }
-      this->Invalidate();
-      break;
-    case 0x157:
-      if (!g_windowMgr.CloseWindow(0xE5)) {
-        g_windowMgr.EnsureWindow(0xE5);
-      }
-      break;
-    case 0x162:
-      if (g_navigationManager.GetCurrentTargetName().size() != 0) {
-        const int type = g_navigationManager.GetCurrentTarget().type;
-        if (type < 2) {
-          this->LayoutWithoutDetails();
-          g_navigationTab = 2;
-          this->unknown_0118 = timeGetTime() + 5000;
-        } else {
-          const NavigationTarget target = g_navigationManager.GetCurrentTarget();
-          CNavi_Object* object = static_cast<CNavi_Object*>(target.object);
-          int x = 1000;
-          int y = 1000;
-          if (type == 2) {
-            NaviCell cell;
-            x = object->GetCell(&cell)->x;
-            NaviCell other;
-            y = object->GetCell(&other)->y;
-          }
-          this->InsertNavigationLink(object->GetInfo()->GetName(), x, y);
-        }
-      }
-      break;
-    case 0x1AE:
-      this->Invalidate();
-      if (g_navigationManager.SaveCurrentTarget() == 0) {
-        const NavigationTarget target = g_navigationManager.GetSavedTarget();
-        const int result = g_navigationManager.Navigate(target.x, target.y);
-        if (result >= 0) {
-          g_navigationTab = 1;
-          g_navigationManager.SelectTarget(g_navigationManager.GetSelectedNode());
-          if (g_windowMgr.window_0428) {
-            static_cast<UINavigationWnd*>(g_windowMgr.window_0428)->RefreshWorldMapMarks();
-          }
-        }
-        g_navigationManager.ShowRouteResult(result, 1, *reinterpret_cast<WindowDialogs*>(&g_windowMgr));
-      } else {
-        g_navigationManager.ShowRouteResult(0, 1, *reinterpret_cast<WindowDialogs*>(&g_windowMgr));
-      }
-      this->RefreshLayout();
-      if (UIWindow* window = g_windowMgr.LookupWindow(0x13A)) {
-        window->SendMsg(nullptr, 0x3C, 0, 0, 0, 0);
-      }
-      break;
-    case 0x1B9:
-      if (g_replayAnimationScaling == 0) {
-        argument2 = this->unknown_00F0->selected;
-      }
-      if (argument2 != -1) {
-        this->SelectRouteNode(static_cast<int>(argument2));
-        reinterpret_cast<WindowResponseRecorder*>(this)->Record(this->geometry.id, static_cast<int>(argument1), argument2, argument3, argument4);
-      }
-      this->Invalidate();
-      break;
-    case 0x1BA:
-      if (!g_windowMgr.CloseWindow(0x13A) && g_navigationManager.NodeCount() != 0) {
-        g_windowMgr.EnsureWindow(0x13A);
-      }
-      break;
-    }
-    break;
-  case 0x22:
-    this->info = reinterpret_cast<NavigationWindowInfo*>(argument1);
-    this->info->Clamp();
-    this->Move(this->info->x, this->info->y);
-    this->Invalidate();
-    break;
-  case 0x27:
-    if (sender == this->unknown_00DC) {
-      g_navigationSearchType = static_cast<int>(argument1);
-      g_navigationManager.BuildNodePaths();
-      this->FillRouteGroups();
-      this->Invalidate();
-      if (g_replayAnimationScaling != 0) {
-        this->unknown_00DC->SendMsg(nullptr, 0x39, argument1, 0, 0, 0);
-      }
-    } else if (g_replayAnimationScaling == 0) {
-      this->LoadRoute(static_cast<int>(argument1));
-    }
-    break;
-  case 0x28:
-    this->SetRoadIcon(static_cast<int>(argument1));
-    break;
-  }
-  return 0;
-}
 
 // OFFSET: 0x005C8D70
 // FUNCTION: fn_03627