diff --git a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
index 1fce866..79c9633 100644
--- a/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
+++ b/src/jasper/modules/world/include/jasper/world/worldstatic.hpp
@@ -14,8 +14,6 @@
 
 namespace jasper::world {
 
-namespace ngfx = nostalgia::gfx;
-
 constexpr void setTopEdge(uint8_t &layerAttachments, uint8_t const val) noexcept {
 	layerAttachments = static_cast<uint8_t>((layerAttachments & 0b11111100) | val);
 }
diff --git a/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp b/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
index d529e3b..f394c8b 100644
--- a/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
+++ b/src/jasper/modules/world/src/studio/worldeditor/worldeditor-imgui.cpp
@@ -9,6 +9,7 @@
 
 #include <keel/media.hpp>
 
+#include <studio/context.hpp>
 #include <studio/imguiutil.hpp>
 
 #include "commands/addrmobjectset.hpp"
@@ -64,8 +65,8 @@ constexpr ox::Point fbPtToTileAddr(
 	constexpr auto RowsOnScrn = 10;
 	auto const fbX = static_cast<float>(fbPt.x);
 	auto const fbY = static_cast<float>(fbPt.y);
-	auto const tw = static_cast<float>(mapSz.x / ColumnsOnScrn);
-	auto const th = static_cast<float>(mapSz.y / RowsOnScrn);
+	auto const tw = mapSz.x / static_cast<float>(ColumnsOnScrn);
+	auto const th = mapSz.y / static_cast<float>(RowsOnScrn);
 	return {
 		static_cast<int>(fbX / tw),
 		static_cast<int>(fbY / th),
@@ -222,6 +223,9 @@ void WorldEditorImGui::drawObjSelector() noexcept {
 		if (ImGui::TreeNodeEx(setName.c_str(), flags)) {
 			for (auto const&obj : set->objects) {
 				if (ImGui::TreeNodeEx(obj.name.c_str(), ImGuiTreeNodeFlags_Leaf)) {
+					if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+						studio::navigateTo(m_sctx, setName, obj.name);
+					}
 					ImGui::TreePop();
 				}
 				ig::dragDropSource([&] {
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
index 47018c8..f478d38 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.cpp
@@ -10,16 +10,16 @@ EditObjectSubSheet::EditObjectSubSheet(
 		WorldObjectSet &doc,
 		size_t const objIdx,
 		ngfx::SubSheetId const newSubSheet,
-		uint8_t const newFrames) noexcept:
+		uint8_t const newFrames):
 	m_doc{doc},
 	m_objIdx{objIdx},
 	m_oldSubSheet{m_doc.objects[objIdx].subsheetId},
 	m_newSubSheet{newSubSheet},
 	m_oldFrames{m_doc.objects[objIdx].frames},
 	m_newFrames{newFrames} {
-	setObsolete(
-		m_newSubSheet == m_oldSubSheet &&
-		m_newFrames == m_oldFrames);
+	if (m_newSubSheet == m_oldSubSheet && m_newFrames == m_oldFrames) {
+		throw ox::Exception{1, "EditObjectSubsheet: no change occurred"};
+	}
 }
 
 ox::Error EditObjectSubSheet::redo() noexcept {
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
index b5c8596..96cec49 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/commands/editobject.hpp
@@ -119,7 +119,7 @@ class EditObjectSubSheet: public studio::UndoCommand {
 			WorldObjectSet &doc,
 			size_t objIdx,
 			ngfx::SubSheetId newSubSheet,
-			uint8_t newFrames) noexcept;
+			uint8_t newFrames);
 
 		ox::Error redo() noexcept override;
 
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
index e68ca48..760ef2a 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.cpp
@@ -77,6 +77,18 @@ void WorldObjectSetEditorImGui::draw(studio::Context&) noexcept {
 void WorldObjectSetEditorImGui::onActivated() noexcept {
 }
 
+void WorldObjectSetEditorImGui::navigateTo(ox::StringViewCR arg) noexcept {
+	auto const idx = ox::find_if(
+		m_doc.objects.begin(),
+		m_doc.objects.end(),
+		[arg](WorldObject const &wo) {
+			return wo.name == arg;
+		});
+	if (idx != m_doc.objects.end()) {
+		m_selectedObj = idx.offset();;
+	}
+}
+
 WorldObject const&WorldObjectSetEditorImGui::activeObj() const noexcept {
 	return m_doc.objects[m_selectedObj];
 }
@@ -257,6 +269,9 @@ void WorldObjectSetEditorImGui::drawSubSheetNode(ngfx::TileSheet::SubSheet const
 				std::ignore = pushCommand<EditObjectSubSheet>(
 					m_doc, m_selectedObj, ss.id, static_cast<uint8_t>(ss.subsheets.size()));
 			}
+			if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+				studio::navigateTo(m_sctx, m_tilesheetPath, ox::intToStr(ss.id));
+			}
 			for (auto const&child : ss.subsheets) {
 				drawSubSheetNode(child);
 			}
@@ -266,11 +281,17 @@ void WorldObjectSetEditorImGui::drawSubSheetNode(ngfx::TileSheet::SubSheet const
 				std::ignore = pushCommand<EditObjectSubSheet>(
 					m_doc, m_selectedObj, ss.id, static_cast<uint8_t>(ss.subsheets.size()));
 			}
+			if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+				studio::navigateTo(m_sctx, m_tilesheetPath, ox::intToStr(ss.id));
+			}
 		}
 	} else if (ImGui::TreeNodeEx(ss.name.c_str(), ImGuiTreeNodeFlags_Leaf | selected)) {
 		if (ImGui::IsItemClicked()) {
 			std::ignore = pushCommand<EditObjectSubSheet>(m_doc, m_selectedObj, ss.id, static_cast<uint8_t>(1));
 		}
+		if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+			studio::navigateTo(m_sctx, m_tilesheetPath, ox::intToStr(ss.id));
+		}
 		ImGui::TreePop();
 	}
 }
@@ -311,6 +332,12 @@ void WorldObjectSetEditorImGui::drawPaletteListItems() noexcept {
 		if (ImGui::Selectable("##PaletteSelection", i == m_selectedPal, ImGuiSelectableFlags_SpanAllColumns)) {
 			m_selectedPal = i;
 		}
+		if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+			auto const [p, err] = m_doc.palettes[i].getPath();
+			if (!err) {
+				studio::navigateTo(m_sctx, p);
+			}
+		}
 		++i;
 	}
 }
diff --git a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
index fb0d433..fbeb7f0 100644
--- a/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
+++ b/src/jasper/modules/world/src/studio/worldobjectseteditor/worldobjectseteditor-imgui.hpp
@@ -41,6 +41,8 @@ class WorldObjectSetEditorImGui: public studio::Editor {
 
 		void onActivated() noexcept override;
 
+		void navigateTo(ox::StringViewCR arg) noexcept override;
+
 	private:
 		WorldObject const&activeObj() const noexcept;