diff --git a/src/data/field/choice.cpp b/src/data/field/choice.cpp
index 3f6ce6bc..bddcee9e 100644
--- a/src/data/field/choice.cpp
+++ b/src/data/field/choice.cpp
@@ -166,14 +166,19 @@ ChoiceStyle::ChoiceStyle(const ChoiceFieldP& field)
 	, combine(COMBINE_NORMAL)
 	, alignment(ALIGN_STRETCH)
 	, colors_card_list(false)
+	, thumbnails(nullptr)
 {}
 
+ChoiceStyle::~ChoiceStyle() {
+	delete thumbnails;
+}
+
 // TODO
 /*
 void ChoiceStyle::invalidate() {
 	// rebuild choice images
 }
-}
+
 */
 bool ChoiceStyle::update(Context& ctx) {
 	// Don't update the choice images, leave that to invalidate()
diff --git a/src/data/field/choice.hpp b/src/data/field/choice.hpp
index cdc49700..f23759be 100644
--- a/src/data/field/choice.hpp
+++ b/src/data/field/choice.hpp
@@ -115,6 +115,7 @@ class ChoiceStyle : public Style {
   public:
 	ChoiceStyle(const ChoiceFieldP& field);
 	DECLARE_STYLE_TYPE(Choice);
+	~ChoiceStyle();
 	
 	ChoicePopupStyle			popup_style;	///< Style of popups/menus
 	ChoiceRenderStyle			render_style;	///< Style of rendering
@@ -126,6 +127,8 @@ class ChoiceStyle : public Style {
 	ImageCombine				combine;		///< Combining mode for drawing the images
 	Alignment					alignment;		///< Alignment of images
 	Image						mask;			///< The actual mask image
+	wxImageList*				thumbnails;		///< Thumbnails for the choices
+	Age							thumbnail_age;	///< Age the thumbnails were generated
 	
 	/// Load the mask image, if it's not already done
 	void loadMask(Package& pkg);
diff --git a/src/data/set.cpp b/src/data/set.cpp
index ae2498eb..d76bfd23 100644
--- a/src/data/set.cpp
+++ b/src/data/set.cpp
@@ -48,15 +48,39 @@ Set::~Set() {}
 
 
 Context& Set::getContext() {
+	assert(wxThread::IsMain());
 	return script_manager->getContext(stylesheet);
 }
 Context& Set::getContext(const CardP& card) {
+	assert(wxThread::IsMain());
 	return script_manager->getContext(card);
 }
 void Set::updateFor(const CardP& card) {
 	script_manager->updateStyles(card);
 }
 
+Context& Set::getContextForThumbnails() {
+	assert(!wxThread::IsMain());
+	if (!thumbnail_script_context) {
+		thumbnail_script_context.reset(new SetScriptContext(*this));
+	}
+	return thumbnail_script_context->getContext(stylesheet);
+}
+Context& Set::getContextForThumbnails(const CardP& card) {
+	assert(!wxThread::IsMain());
+	if (!thumbnail_script_context) {
+		thumbnail_script_context.reset(new SetScriptContext(*this));
+	}
+	return thumbnail_script_context->getContext(card);
+}
+Context& Set::getContextForThumbnails(const StyleSheetP& stylesheet) {
+	assert(!wxThread::IsMain());
+	if (!thumbnail_script_context) {
+		thumbnail_script_context.reset(new SetScriptContext(*this));
+	}
+	return thumbnail_script_context->getContext(stylesheet);
+}
+
 StyleSheetP Set::stylesheetFor(const CardP& card) {
 	if (card && card->stylesheet) return card->stylesheet;
 	else                          return stylesheet;
diff --git a/src/data/set.hpp b/src/data/set.hpp
index b965cf07..b889f5d6 100644
--- a/src/data/set.hpp
+++ b/src/data/set.hpp
@@ -71,6 +71,9 @@ class Set : public Packaged {
 	/// A context for performing scripts on a particular card
 	/** Should only be used from the thumbnail thread! */
 	Context& getContextForThumbnails(const CardP& card);
+	/// A context for performing scripts on a particular stylesheet
+	/** Should only be used from the thumbnail thread! */
+	Context& getContextForThumbnails(const StyleSheetP& stylesheet);
 	
 	/// Stylesheet to use for a particular card
 	/** card may be null */
diff --git a/src/gui/control/card_list.cpp b/src/gui/control/card_list.cpp
index c4023086..b591f4fc 100644
--- a/src/gui/control/card_list.cpp
+++ b/src/gui/control/card_list.cpp
@@ -8,6 +8,7 @@
 
 #include <gui/control/card_list.hpp>
 #include <gui/control/card_list_column_select.hpp>
+#include <gui/icon_menu.hpp>
 #include <data/game.hpp>
 #include <data/field.hpp>
 #include <data/field/choice.hpp>
@@ -60,6 +61,10 @@ void CardListBase::onAction(const Action& action, bool undone) {
 	TYPE_CASE(action, AddCardAction) {
 		if (undone) {
 			refreshList();
+			if (!allowModify()) {
+				// Let some other card list else do the selecting
+				return;
+			}
 			selectCardPos((long)sorted_card_list.size() - 1, true);
 		} else {
 			// select the new card
@@ -75,6 +80,10 @@ void CardListBase::onAction(const Action& action, bool undone) {
 		} else {
 			long pos = selected_card_pos;
 			refreshList();
+			if (!allowModify()) {
+				// Let some other card list else do the selecting
+				return;
+			}
 			if (action.card == selected_card) {
 				// select the next card, if not possible, select the last
 				if ((size_t)pos + 1 < sorted_card_list.size()) {
@@ -140,8 +149,8 @@ void CardListBase::selectCard(const CardP& card, bool focus, bool event) {
 		CardSelectEvent ev(card);
 		ProcessEvent(ev);
 	}
+	findSelectedCardPos();
 	if (focus) {
-		findSelectedCardPos();
 		selectCurrentCard();
 	}
 }
@@ -443,6 +452,19 @@ void CardListBase::onDrag(wxMouseEvent& ev) {
 	}
 }
 
+void CardListBase::onContextMenu(wxContextMenuEvent&) {
+	if (allowModify()) {
+		IconMenu m;
+		m.Append(wxID_CUT,	 _("TOOL_CUT"),		_("Cu&t"),		_("Move the selected card to the clipboard"));
+		m.Append(wxID_COPY,	 _("TOOL_COPY"),	_("&Copy"),		_("Place the selected card on the clipboard"));
+		m.Append(wxID_PASTE, _("TOOL_PASTE"),	_("&Paste"),	_("Inserts the card from the clipboard"));
+		m.AppendSeparator();
+		m.Append(ID_CARD_ADD,	_("TOOL_CARD_ADD"),		_("&Add Card"),					_("Add a new, blank, card to this set"));
+		m.Append(ID_CARD_REMOVE,_("TOOL_CARD_DEL"),		_("&Remove Select Card"),		_("Delete the selected card from this set"));
+		PopupMenu(&m);
+	}
+}
+
 // ----------------------------------------------------------------------------- : CardListBase : Event table
 
 BEGIN_EVENT_TABLE(CardListBase, wxListView)
@@ -452,4 +474,5 @@ BEGIN_EVENT_TABLE(CardListBase, wxListView)
 	EVT_CHAR					(					CardListBase::onChar)
 	EVT_MOTION					(					CardListBase::onDrag)
 	EVT_MENU					(ID_SELECT_COLUMNS,	CardListBase::onSelectColumns)
+	EVT_CONTEXT_MENU            (                   CardListBase::onContextMenu)
 END_EVENT_TABLE  ()
diff --git a/src/gui/control/card_list.hpp b/src/gui/control/card_list.hpp
index 97f9b787..17c29905 100644
--- a/src/gui/control/card_list.hpp
+++ b/src/gui/control/card_list.hpp
@@ -154,6 +154,7 @@ class CardListBase : public wxListView, public SetView {
 	void onItemFocus       (wxListEvent& ev);
 	void onChar            (wxKeyEvent& ev);
 	void onDrag            (wxMouseEvent& ev);
+	void onContextMenu     (wxContextMenuEvent&);
 };
 
 // ----------------------------------------------------------------------------- : EOF
diff --git a/src/gui/thumbnail_thread.cpp b/src/gui/thumbnail_thread.cpp
index e4872f46..06e42e15 100644
--- a/src/gui/thumbnail_thread.cpp
+++ b/src/gui/thumbnail_thread.cpp
@@ -12,6 +12,30 @@
 typedef pair<ThumbnailRequestP,Image> pair_ThumbnailRequestP_Image;
 DECLARE_TYPEOF_COLLECTION(pair_ThumbnailRequestP_Image);
 
+// ----------------------------------------------------------------------------- : Image Cache
+
+String user_settings_dir();
+String image_cache_dir() {
+	String dir = user_settings_dir() + _("/cache");
+	if (!wxDirExists(dir)) wxMkDir(dir);
+	return dir + _("/");
+}
+
+/// A name that is safe to use as a filename, for the cache
+String safe_filename(const String& str) {
+	String ret; ret.reserve(str.size());
+	FOR_EACH_CONST(c, str) {
+		if (isAlnum(c)) {
+			ret += c;
+		} else if (c==_(' ') || c==_('-')) {
+			ret += _('-');
+		} else {
+			ret += _('_');
+		}
+	}
+	return ret;
+}
+
 // ----------------------------------------------------------------------------- : ThumbnailThreadWorker
 
 class ThumbnailThreadWorker : public wxThread {
@@ -50,7 +74,15 @@ wxThread::ExitCode ThumbnailThreadWorker::Entry() {
 		if (TestDestroy()) return 0;
 		Image img = current->generate();
 		if (TestDestroy()) return 0;
-		// store result
+		// store in cache
+		if (img.Ok()) {
+			String filename = image_cache_dir() + safe_filename(current->cache_name) + _(".png");
+			img.SaveFile(filename, wxBITMAP_TYPE_PNG);
+			// set modification time
+			wxFileName fn(filename);
+			fn.SetTimes(0, &current->modified, 0);
+		}
+		// store result in closed request list
 		{
 			wxMutexLocker lock(parent->mutex);
 			parent->closed_requests.push_back(make_pair(current,img));
@@ -79,27 +111,6 @@ ThumbnailThread::~ThumbnailThread() {
 	abortAll();
 }
 
-String user_settings_dir();
-String image_cache_dir() {
-	String dir = user_settings_dir() + _("/cache");
-	if (!wxDirExists(dir)) wxMkDir(dir);
-	return dir + _("/");
-}
-
-String ThumbnailThread::safeFilename(const String& str) {
-	String ret; ret.reserve(str.size());
-	FOR_EACH_CONST(c, str) {
-		if (isAlnum(c)) {
-			ret += c;
-		} else if (c==_(' ') || c==_('-')) {
-			ret += _('-');
-		} else {
-			ret += _('_');
-		}
-	}
-	return ret;
-}
-
 void ThumbnailThread::request(const ThumbnailRequestP& request) {
 	assert(wxThread::IsMain());
 	// Is the request in progress?
@@ -108,7 +119,7 @@ void ThumbnailThread::request(const ThumbnailRequestP& request) {
 	}
 	request_names.insert(request);
 	// Is the image in the cache?
-	String filename = image_cache_dir() + safeFilename(request->cache_name) + _(".png");
+	String filename = image_cache_dir() + safe_filename(request->cache_name) + _(".png");
 	wxFileName fn(filename);
 	if (fn.FileExists()) {
 		wxDateTime modified;
@@ -152,14 +163,6 @@ bool ThumbnailThread::done(void* owner) {
 	FOR_EACH(r, finished) {
 		// store image
 		r.first->store(r.second);
-		// store in cache
-		if (r.second.Ok()) {
-			String filename = image_cache_dir() + safeFilename(r.first->cache_name) + _(".png");
-			r.second.SaveFile(filename, wxBITMAP_TYPE_PNG);
-			// set modification time
-			wxFileName fn(filename);
-			fn.SetTimes(0, &r.first->modified, 0);
-		}
 		// remove from name list
 		request_names.erase(r.first);
 	}
diff --git a/src/gui/thumbnail_thread.hpp b/src/gui/thumbnail_thread.hpp
index 64777bb0..5a8b4124 100644
--- a/src/gui/thumbnail_thread.hpp
+++ b/src/gui/thumbnail_thread.hpp
@@ -69,9 +69,6 @@ class ThumbnailThread {
 	set<ThumbnailRequestP>                  request_names;      ///< Requests that haven't been stored yet, to prevent duplicates
 	friend class ThumbnailThreadWorker;
 	ThumbnailThreadWorker* worker;								///< The worker thread. invariant: no requests ==> worker==nullptr
-	
-	/// A name that is safe to use as a filename, for the cache
-	static String safeFilename(const String& str);
 };
 
 /// The global thumbnail generator thread
diff --git a/src/gui/value/choice.cpp b/src/gui/value/choice.cpp
index 3d1af626..f8f94a40 100644
--- a/src/gui/value/choice.cpp
+++ b/src/gui/value/choice.cpp
@@ -8,17 +8,66 @@
 
 #include <gui/value/choice.hpp>
 #include <gui/util.hpp>
+#include <gui/thumbnail_thread.hpp>
 #include <data/action/value.hpp>
+#include <data/stylesheet.hpp>
+#include <script/image.hpp>
 
 DECLARE_TYPEOF_COLLECTION(ChoiceField::ChoiceP);
 
+// ----------------------------------------------------------------------------- : ChoiceThumbnailRequest
+
+class ChoiceThumbnailRequest : public ThumbnailRequest {
+  public:
+	ChoiceThumbnailRequest(ChoiceValueEditor* cve, int id);
+	virtual Image generate();
+	virtual void store(const Image&);
+  private:
+	int id;
+	StyleSheetP stylesheet;
+};
+
+ChoiceThumbnailRequest::ChoiceThumbnailRequest(ChoiceValueEditor* cve, int id)
+	: ThumbnailRequest(
+		cve,
+		cve->viewer.stylesheet->name() + _("/") + cve->field().name + _("/") << id,
+		cve->viewer.stylesheet->lastModified())
+	, stylesheet(cve->viewer.stylesheet)
+	, id(id)
+{}
+
+Image ChoiceThumbnailRequest::generate() {
+	ChoiceValueEditor& cve = *(ChoiceValueEditor*)owner;
+	Context& ctx = cve.getSet().getContextForThumbnails(stylesheet);
+	String name = cannocial_name_form(cve.field().choices->choiceName(id));
+	ScriptableImage& img = cve.style().choice_images[name];
+	return img.generate(ctx, *stylesheet, 16, 16, ASPECT_BORDER, true)->image;
+}
+
+void ChoiceThumbnailRequest::store(const Image& img) {
+	ChoiceValueEditor& cve = *(ChoiceValueEditor*)owner;
+	wxImageList* il = cve.style().thumbnails;
+	while (id > il->GetImageCount()) {
+		il->Add(wxBitmap(16,16),*wxBLACK);
+	}
+	if (img.Ok()) {
+		if (id == il->GetImageCount()) {
+			il->Add(img);
+		} else {
+			il->Replace(id, img);
+		}
+	}
+}
+
 // ----------------------------------------------------------------------------- : DropDownChoiceList
 
 DropDownChoiceList::DropDownChoiceList(Window* parent, bool is_submenu, ChoiceValueEditor& cve, ChoiceField::ChoiceP group)
 	: DropDownList(parent, is_submenu, is_submenu ? nullptr : &cve)
 	, group(group)
 	, cve(cve)
-{}
+{
+	icon_size.width = 16;
+}
 
 size_t DropDownChoiceList::itemCount() const {
 	return group->choices.size() + hasDefault();
@@ -59,7 +108,20 @@ DropDownList* DropDownChoiceList::submenu(size_t item) const {
 }
 
 void DropDownChoiceList::drawIcon(DC& dc, int x, int y, size_t item, bool selected) const {
-	// TODO
+	// imagelist to use
+	wxImageList* il = cve.style().thumbnails;
+	assert(il);
+	// find the image for the item
+	int image_id;
+	if (isFieldDefault(item)) {
+		image_id = default_id;
+	} else {
+		image_id = getChoice(item)->first_id;
+	}
+	// draw image
+	if (image_id < il->GetImageCount()) {
+		il->Draw(image_id, dc, x, y);
+	}
 }
 
 
@@ -72,11 +134,24 @@ void DropDownChoiceList::select(size_t item) {
 	}
 }
 size_t DropDownChoiceList::selection() const {
-	if (hasFieldDefault() && cve.value().value.isDefault()) {
-		return 0;
-	}
-	size_t i = hasDefault();
+	// we need thumbnail images soon
+	const_cast<DropDownChoiceList*>(this)->generateThumbnailImages();
+	// selected item
 	int id = field().choices->choiceId(cve.value().value());
+	// id of default item
+	if (hasFieldDefault()) {
+		if (cve.value().value.isDefault()) {
+			// default is selected
+			default_id = id;
+			return 0;
+		} else {
+			// run default script to find out what the default choice would be
+			String default_choice = *cve.field().default_script.invoke( cve.viewer.getContext() );
+			default_id = group->choiceId(default_choice);
+		}
+	}
+	// item corresponding to id
+	size_t i = hasDefault();
 	FOR_EACH(c, group->choices) {
 		if (id >= c->first_id && id < c->lastId()) {
 			return i;
@@ -86,12 +161,45 @@ size_t DropDownChoiceList::selection() const {
 	return NO_SELECTION;
 }
 
+void DropDownChoiceList::generateThumbnailImages() {
+	if (!isRoot()) return;
+	if (!cve.style().thumbnails) {
+		cve.style().thumbnails = new wxImageList(16,16);
+	}
+	int image_count = cve.style().thumbnails->GetImageCount();
+	int end = group->lastId();
+	Context& ctx = cve.viewer.getContext();
+	for (int i = 0 ; i < end ; ++i) {
+		String name = cannocial_name_form(group->choiceName(i));
+		ScriptableImage& img = cve.style().choice_images[name];
+		if (i >= image_count || !img.upToDate(ctx, cve.style().thumbnail_age)) {
+			// TODO : handle the case where image i was previously skipped
+			// request this thumbnail
+			thumbnail_thread.request( new_shared2<ChoiceThumbnailRequest>(&cve, i) );
+		}
+	}
+	cve.style().thumbnail_age.update();
+}
+
+void DropDownChoiceList::onIdle(wxIdleEvent& ev) {
+	if (!isRoot()) return;
+	thumbnail_thread.done(&cve);
+}
+
+BEGIN_EVENT_TABLE(DropDownChoiceList, DropDownList)
+	EVT_IDLE(DropDownChoiceList::onIdle)
+END_EVENT_TABLE()
+
 // ----------------------------------------------------------------------------- : ChoiceValueEditor
 
 IMPLEMENT_VALUE_EDITOR(Choice)
 	, drop_down(new DropDownChoiceList(&editor(), false, *this, field().choices))
 {}
 
+ChoiceValueEditor::~ChoiceValueEditor() {
+	thumbnail_thread.abort(this);
+}
+
 void ChoiceValueEditor::onLeftDown(const RealPoint& pos, wxMouseEvent& ev) {
 	drop_down->onMouseInParent(ev, style().popup_style == POPUP_DROPDOWN_IN_PLACE && !nativeLook());
 }
diff --git a/src/gui/value/choice.hpp b/src/gui/value/choice.hpp
index 5ffdcdb6..80b5b81d 100644
--- a/src/gui/value/choice.hpp
+++ b/src/gui/value/choice.hpp
@@ -22,6 +22,7 @@ DECLARE_POINTER_TYPE(DropDownList);
 class ChoiceValueEditor : public ChoiceValueViewer, public ValueEditor {
   public:
 	DECLARE_VALUE_EDITOR(Choice);
+	~ChoiceValueEditor();
 	
 	// --------------------------------------------------- : Events
 	virtual void onLeftDown(const RealPoint& pos, wxMouseEvent& ev);
@@ -34,6 +35,7 @@ class ChoiceValueEditor : public ChoiceValueViewer, public ValueEditor {
   private:
 	DropDownListP drop_down;
 	friend class DropDownChoiceList;
+	friend class ChoiceThumbnailRequest;
 	/// Change the choice
 	void change(const Defaultable<String>& c);
 };
@@ -56,13 +58,17 @@ class DropDownChoiceList : public DropDownList {
 	virtual size_t selection() const;
 	
   private:
+	DECLARE_EVENT_TABLE();
+	
 	ChoiceValueEditor& cve;
 	ChoiceField::ChoiceP group;		///< Group this menu shows
 	mutable vector<DropDownListP> submenus;
+	mutable int default_id; ///< Item id for the default item (if !hasFieldDefault()) this is undefined)
 	
 	inline const ChoiceField& field() const { return cve.field(); }
 	
-	inline bool hasFieldDefault() const { return group == field().choices && field().default_script; }
+	inline bool isRoot()          const { return group == field().choices; }
+	inline bool hasFieldDefault() const { return isRoot() && field().default_script; }
 	inline bool hasGroupDefault() const { return group->hasDefault(); }
 	inline bool hasDefault()      const { return hasFieldDefault() || hasGroupDefault(); }
 	inline bool isFieldDefault(size_t item) const { return item == 0 && hasFieldDefault(); }
@@ -71,6 +77,9 @@ class DropDownChoiceList : public DropDownList {
 	
 	// Find an item in the group of choices
 	ChoiceField::ChoiceP getChoice(size_t item) const;
+	/// Start generating thumbnail images
+	void generateThumbnailImages();
+	void onIdle(wxIdleEvent&);
 };
 
 // ----------------------------------------------------------------------------- : EOF
diff --git a/src/render/card/viewer.hpp b/src/render/card/viewer.hpp
index b3fe626e..1b2dc0b9 100644
--- a/src/render/card/viewer.hpp
+++ b/src/render/card/viewer.hpp
@@ -51,6 +51,8 @@ class DataViewer : public SetView {
 	Context& getContext() const;
 	/// The rotation to use
 	virtual Rotation getRotation() const;
+	/// The card we are viewing
+	inline CardP getCard() const { return card; }
 	
 	// --------------------------------------------------- : Setting data
 	
diff --git a/src/script/image.cpp b/src/script/image.cpp
index 92aceed1..d6eb1d90 100644
--- a/src/script/image.cpp
+++ b/src/script/image.cpp
@@ -46,6 +46,12 @@ ScriptImageP to_script_image(const ScriptValueP& value) {
 		} else {
 			throw ScriptError(_("Unable to load image '") + filename + _("' from '" + pkg->name() + _("'")));
 		}
+	} else if (value->type() == SCRIPT_NIL) {
+		// error, return blank image
+		Image i(1,1);
+		i.InitAlpha();
+		i.SetAlpha(0,0,0);
+		return new_intrusive1<ScriptImage>(i);
 	} else {
 		throw ScriptError(_("Can not convert from '") + value->typeName() + _("' to image"));
 	}
@@ -129,6 +135,7 @@ ScriptImageP ScriptableImage::update(Context& ctx, Package& pkg, UInt width, UIn
 }
 
 bool ScriptableImage::upToDate(Context& ctx, Age age) const {
+	if (!script) return true;
 	try {
 		WITH_DYNAMIC_ARG(last_update_age, age.get());
 		return script_image_up_to_date(script.invoke(ctx));
diff --git a/src/script/script_manager.cpp b/src/script/script_manager.cpp
index a47f20d5..f603e5ba 100644
--- a/src/script/script_manager.cpp
+++ b/src/script/script_manager.cpp
@@ -63,6 +63,13 @@ Context& SetScriptContext::getContext(const StyleSheetP& stylesheet) {
 		ctx->setVariable(_("stylesheet"), toScript(stylesheet));
 		ctx->setVariable(_("card"),       set.cards.empty() ? script_nil : toScript(set.cards.front())); // dummy value
 		ctx->setVariable(_("styling"),    toScript(&set.stylingDataFor(*stylesheet)));
+		try {
+			// perform init scripts, don't use a scope, variables stay bound in the context
+			set.game  ->init_script.invoke(*ctx, false);
+			stylesheet->init_script.invoke(*ctx, false);
+		} catch (const Error& e) {
+			handle_error(e, false, false);
+		}
 		onInit(stylesheet, ctx);
 		return *ctx;
 	}
@@ -94,13 +101,10 @@ void SetScriptManager::onInit(const StyleSheetP& stylesheet, Context* ctx) {
 	assert(wxThread::IsMain());
 	// initialize dependencies
 	try {
-		// perform init scripts, don't use a scope, variables stay bound in the context
-		set.game  ->init_script.invoke(*ctx, false);
-		stylesheet->init_script.invoke(*ctx, false);
 		// find script dependencies
 		initDependencies(*ctx, *set.game);
 		initDependencies(*ctx, *stylesheet);
-	} catch (Error e) {
+	} catch (const Error& e) {
 		handle_error(e, false, false);
 	}
 }
diff --git a/src/util/io/package.hpp b/src/util/io/package.hpp
index 54e02b04..a6d96341 100644
--- a/src/util/io/package.hpp
+++ b/src/util/io/package.hpp
@@ -62,6 +62,8 @@ class Package {
 	virtual String fullName() const;
 	/// Return the absolute filename of this file
 	const String& absoluteFilename() const;
+	/// The time this package was last modified
+	inline wxDateTime lastModified() const { return modified; }
 	
 	/// Get an input stream for the package icon, if there is any
 	virtual InputStreamP openIconFile();