message: Demo: Fixed conflicting id introduced in . Added tooltip.
diff: @@ -1484,6 +1484,8 @@ void ImGui::ShowTestWindow(bool* p_open)
  if (ImGui::CollapsingHeader("Columns"))
  {
  + ImGui::PushID("Columns");
  +
  // Basic columns
  if (ImGui::TreeNode("Basic"))
  {
  @@ -1674,6 +1676,7 @@ void ImGui::ShowTestWindow(bool* p_open)
  ImGui::Separator();
  ImGui::TreePop();
  }
  + ImGui::PopID();
  }
  if (ImGui::CollapsingHeader("Filtering"))
  @@ -1829,7 +1832,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
  if (ImGui::TreeNode("Rendering"))
  {
  - ImGui::Checkbox("Anti-aliased lines", &style.AntiAliasedLines);
  + ImGui::Checkbox("Anti-aliased lines", &style.AntiAliasedLines); ImGui::SameLine(); ShowHelpMarker("When disabling anti-aliasing lines, you'll probably want to disable borders in your style as well.");
  ImGui::Checkbox("Anti-aliased shapes", &style.AntiAliasedShapes);
  ImGui::PushItemWidth(100);
  ImGui::DragFloat("Curve Tessellation Tolerance", &style.CurveTessellationTol, 0.02f, 0.10f, FLT_MAX, NULL, 2.0f);
  