diff --git a/docs/changelog.txt b/docs/changelog.txt
index d10407621..bf8182c73 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -46,6 +46,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 ## Internals
 
 ## Lua
+- ``dfhack.items.markForTrade``: new API for marking items for trade
 
 ## Removed
 
diff --git a/docs/dev/Lua API.rst b/docs/dev/Lua API.rst
index d07cb045e..33e27be2d 100644
--- a/docs/dev/Lua API.rst	
+++ b/docs/dev/Lua API.rst	
@@ -1775,6 +1775,10 @@ Items module
 
   Checks whether the item and all items it contains, if any, can be traded.
 
+* ``dfhack.items.markForTrade(item, depot)``
+
+  Marks the given item for trade at the given depot.
+
 * ``dfhack.items.isRouteVehicle(item)``
 
   Checks whether the item is an assigned hauling vehicle.
diff --git a/library/LuaApi.cpp b/library/LuaApi.cpp
index d2c32cf63..5d9411434 100644
--- a/library/LuaApi.cpp
+++ b/library/LuaApi.cpp
@@ -2014,6 +2014,7 @@ static const LuaWrapper::FunctionReg dfhack_items_module[] = {
     WRAPM(Items, checkMandates),
     WRAPM(Items, canTrade),
     WRAPM(Items, canTradeWithContents),
+    WRAPM(Items, markForTrade),
     WRAPM(Items, isRouteVehicle),
     WRAPM(Items, isSquadEquipment),
     WRAPN(moveToGround, items_moveToGround),
diff --git a/library/include/modules/Items.h b/library/include/modules/Items.h
index 7f2c9ce69..08737fb2b 100644
--- a/library/include/modules/Items.h
+++ b/library/include/modules/Items.h
@@ -33,6 +33,7 @@ distribution.
 #include "MemAccess.h"
 
 #include "DataDefs.h"
+#include "df/building_tradedepotst.h"
 #include "df/item.h"
 #include "df/item_type.h"
 #include "df/general_ref.h"
@@ -199,6 +200,8 @@ DFHACK_EXPORT bool checkMandates(df::item *item);
 DFHACK_EXPORT bool canTrade(df::item *item);
 /// Checks whether the item and all items it contains, if any, can be traded
 DFHACK_EXPORT bool canTradeWithContents(df::item *item);
+/// marks the given item for trade at the given depot
+DFHACK_EXPORT bool markForTrade(df::item *item, df::building_tradedepotst *depot);
 
 /// Checks whether the item is an assigned hauling vehicle
 DFHACK_EXPORT bool isRouteVehicle(df::item *item);
diff --git a/library/lua/gui/widgets.lua b/library/lua/gui/widgets.lua
index a58ac228c..7a3201f28 100644
--- a/library/lua/gui/widgets.lua
+++ b/library/lua/gui/widgets.lua
@@ -1552,8 +1552,7 @@ function CycleHotkeyLabel:setOption(value_or_index, call_on_change)
         end
     end
     if not option_idx then
-        error(('cannot find option with value or index: "%s"')
-              :format(value_or_index))
+        option_idx = 1
     end
     local old_option_idx = self.option_idx
     self.option_idx = option_idx
@@ -2392,9 +2391,15 @@ local function rangeslider_do_drag(self, width_per_idx)
         end
     end
     if new_left_idx and new_left_idx ~= self.get_left_idx_fn() then
+        if not new_right_idx and new_left_idx > self.get_right_idx_fn() then
+            self.on_right_change(new_left_idx)
+        end
         self.on_left_change(new_left_idx)
     end
     if new_right_idx and new_right_idx ~= self.get_right_idx_fn() then
+        if new_right_idx < self.get_left_idx_fn() then
+            self.on_left_change(new_right_idx)
+        end
         self.on_right_change(new_right_idx)
     end
 end
diff --git a/library/modules/Gui.cpp b/library/modules/Gui.cpp
index ee5eaa31c..dc6f47f59 100644
--- a/library/modules/Gui.cpp
+++ b/library/modules/Gui.cpp
@@ -216,6 +216,11 @@ DEFINE_GET_FOCUS_STRING_HANDLER(dwarfmode)
         newFocusString = baseFocus;
         newFocusString += "/ViewSheets";
         newFocusString += "/" + enum_item_key(game->main_interface.view_sheets.active_sheet);
+        if (game->main_interface.view_sheets.active_sheet == df::view_sheet_type::BUILDING) {
+            auto bld = df::building::find(game->main_interface.view_sheets.viewing_bldid);
+            if (bld)
+                newFocusString += '/' + enum_item_key(bld->getType());
+        }
         focusStrings.push_back(newFocusString);
     }
 
@@ -328,6 +333,10 @@ DEFINE_GET_FOCUS_STRING_HANDLER(dwarfmode)
     if (game->main_interface.trade.open) {
         newFocusString = baseFocus;
         newFocusString += "/Trade";
+        if (game->main_interface.trade.choosing_merchant)
+            newFocusString += "/ChoosingMerchant";
+        else
+            newFocusString += "/Default";
         focusStrings.push_back(newFocusString);
     }
     if (game->main_interface.job_details.open) {
@@ -377,6 +386,7 @@ DEFINE_GET_FOCUS_STRING_HANDLER(dwarfmode)
     if (game->main_interface.unit_selector.open) {
         newFocusString = baseFocus;
         newFocusString += "/UnitSelector";
+        newFocusString += '/' + enum_item_key(game->main_interface.unit_selector.context);
         focusStrings.push_back(newFocusString);
     }
     if (game->main_interface.announcement_alert.open) {
diff --git a/library/modules/Items.cpp b/library/modules/Items.cpp
index 03d6cda4a..f98c7c46b 100644
--- a/library/modules/Items.cpp
+++ b/library/modules/Items.cpp
@@ -39,6 +39,7 @@ distribution.
 using namespace std;
 
 #include "ModuleFactory.h"
+#include "modules/Job.h"
 #include "modules/MapCache.h"
 #include "modules/Materials.h"
 #include "modules/Items.h"
@@ -48,6 +49,7 @@ using namespace std;
 #include "df/body_part_template_flags.h"
 #include "df/building.h"
 #include "df/building_actual.h"
+#include "df/building_tradedepotst.h"
 #include "df/caste_raw.h"
 #include "df/creature_raw.h"
 #include "df/general_ref.h"
@@ -1637,6 +1639,42 @@ bool Items::canTradeWithContents(df::item *item)
     return true;
 }
 
+bool Items::markForTrade(df::item *item, df::building_tradedepotst *depot) {
+    CHECK_NULL_POINTER(item);
+    CHECK_NULL_POINTER(depot);
+
+    // validate that the depot is in a good state
+    if (depot->getBuildStage() < depot->getMaxBuildStage())
+        return false;
+    if (depot->jobs.size() && depot->jobs[0]->job_type == df::job_type::DestroyBuilding)
+        return false;
+
+    auto href = df::allocate<df::general_ref_building_holderst>();
+    if (!href)
+        return false;
+
+    auto job = new df::job();
+    job->job_type = df::job_type::BringItemToDepot;
+    job->pos = df::coord(depot->centerx, depot->centery, depot->z);
+
+    // job <-> item link
+    if (!Job::attachJobItem(job, item, df::job_item_ref::Hauled)) {
+        delete job;
+        delete href;
+        return false;
+    }
+
+    // job <-> building link
+    href->building_id = depot->id;
+    depot->jobs.push_back(job);
+    job->general_refs.push_back(href);
+
+    // add to job list
+    Job::linkIntoWorld(job);
+
+    return true;
+}
+
 bool Items::isRouteVehicle(df::item *item)
 {
     CHECK_NULL_POINTER(item);
diff --git a/plugins/logistics.cpp b/plugins/logistics.cpp
index d62ee8c36..20b2c343f 100644
--- a/plugins/logistics.cpp
+++ b/plugins/logistics.cpp
@@ -323,31 +323,7 @@ public:
     bool designate(color_ostream& out, df::item* item) override {
         if (!depot)
             return false;
-
-        auto href = df::allocate<df::general_ref_building_holderst>();
-        if (!href)
-            return false;
-
-        auto job = new df::job();
-        job->job_type = df::job_type::BringItemToDepot;
-        job->pos = df::coord(depot->centerx, depot->centery, depot->z);
-
-        // job <-> item link
-        if (!Job::attachJobItem(job, item, df::job_item_ref::Hauled)) {
-            delete job;
-            delete href;
-            return false;
-        }
-
-        // job <-> building link
-        href->building_id = depot->id;
-        depot->jobs.push_back(job);
-        job->general_refs.push_back(href);
-
-        // add to job list
-        Job::linkIntoWorld(job);
-
-        return true;
+        return Items::markForTrade(item, depot);
     }
 
 private: