diff --git a/library/include/dfhack/modules/Materials.h b/library/include/dfhack/modules/Materials.h
index 813ac3585..5c77659be 100644
--- a/library/include/dfhack/modules/Materials.h
+++ b/library/include/dfhack/modules/Materials.h
@@ -369,7 +369,7 @@ namespace DFHack
         bool ReadDescriptorColors(void);
         bool ReadOthers (void);
 
-        void ReadAllMaterials(void);
+        bool ReadAllMaterials(void);
 
         std::string getType(const t_material & mat);
         std::string getDescription(const t_material & mat);
diff --git a/library/modules/Materials.cpp b/library/modules/Materials.cpp
index 09f275777..55145f002 100644
--- a/library/modules/Materials.cpp
+++ b/library/modules/Materials.cpp
@@ -341,16 +341,18 @@ bool Materials::ReadCreatureTypesEx (void)
     return true;
 }
 
-void Materials::ReadAllMaterials(void)
+bool Materials::ReadAllMaterials(void)
 {
-    this->ReadInorganicMaterials();
-    this->ReadOrganicMaterials();
-    this->ReadWoodMaterials();
-    this->ReadPlantMaterials();
-    this->ReadCreatureTypes();
-    this->ReadCreatureTypesEx();
-    this->ReadDescriptorColors();
-    this->ReadOthers();
+    bool ok = true;
+    ok &= this->ReadInorganicMaterials();
+    ok &= this->ReadOrganicMaterials();
+    ok &= this->ReadWoodMaterials();
+    ok &= this->ReadPlantMaterials();
+    ok &= this->ReadCreatureTypes();
+    ok &= this->ReadCreatureTypesEx();
+    ok &= this->ReadDescriptorColors();
+    ok &= this->ReadOthers();
+    return ok;
 }
 
 /// miserable pile of magic. The material system is insane.
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index d1204588f..3ca16df71 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -144,3 +144,6 @@ DFHACK_PLUGIN(mode mode.cpp)
 DFHACK_PLUGIN(liquids liquids.cpp)
 DFHACK_PLUGIN(tubefill tubefill.cpp)
 DFHACK_PLUGIN(autodump autodump.cpp)
+DFHACK_PLUGIN(cleanowned cleanowned.cpp)
+DFHACK_PLUGIN(cleartask cleartask.cpp)
+DFHACK_PLUGIN(deramp deramp.cpp)
diff --git a/plugins/cleanowned.cpp b/plugins/cleanowned.cpp
index f54d3999a..094f3a4df 100644
--- a/plugins/cleanowned.cpp
+++ b/plugins/cleanowned.cpp
@@ -2,137 +2,151 @@
  * Confiscates and dumps garbage owned by dwarfs.
  */
 
-#include <cstdio>
-#include <iostream>
-#include <iomanip>
 #include <sstream>
 #include <climits>
 #include <vector>
+#include <set>
 using namespace std;
 
-#include <DFHack.h>
-#include <dfhack/DFVector.h>
-#include <dfhack/DFTypes.h>
-#include <dfhack/extra/termutil.h>
+#include <dfhack/Core.h>
+#include <dfhack/Console.h>
+#include <dfhack/Export.h>
+#include <dfhack/PluginManager.h>
+#include <vector>
+#include <string>
+#include <dfhack/modules/Maps.h>
+#include <dfhack/modules/Items.h>
+#include <dfhack/modules/Creatures.h>
+#include <dfhack/modules/Materials.h>
+#include <dfhack/modules/Translation.h>
+using namespace DFHack;
+
+DFhackCExport command_result df_cleanowned (Core * c, vector <string> & parameters);
+
+DFhackCExport const char * plugin_name ( void )
+{
+    return "cleanowned";
+}
+
+DFhackCExport command_result plugin_init ( Core * c, std::vector <PluginCommand> &commands)
+{
+    commands.clear();
+    commands.push_back(PluginCommand("cleanowned",
+                                     "Confiscates and dumps garbage owned by dwarfs.",
+                                     df_cleanowned));
+    return CR_OK;
+}
 
-int main (int argc, char *argv[])
+DFhackCExport command_result plugin_shutdown ( Core * c )
+{
+    return CR_OK;
+}
+
+typedef std::map <DFCoord, uint32_t> coordmap;
+
+DFhackCExport command_result df_cleanowned (Core * c, vector <string> & parameters)
 {
-    bool temporary_terminal = TemporaryTerminal();
     bool dump_scattered = false;
     bool confiscate_all = false;
     bool dry_run = false;
     int wear_dump_level = 65536;
 
-    for(int i = 1; i < argc; i++)
+    for(int i = 0; i < parameters.size(); i++)
     {
-        char *arg = argv[i];
-        if (arg[0] != '-')
-            continue;
-
-        for (; *arg; arg++) {
-            switch (arg[0]) {
-            case 'd':
-                dry_run = true;
-                break;
-            case 'l':
-                dump_scattered = true;
-                break;
-            case 'a':
-                confiscate_all = true;
-                break;
-            case 'x':
-                wear_dump_level = 1;
-                break;
-            case 'X':
-                wear_dump_level = 2;
-                break;
-            }
+        string & param = parameters[i];
+        if(param == "dryrun")
+            dry_run = true;
+        else if(param == "scattered")
+            dump_scattered = true;
+        else if(param == "all")
+            confiscate_all = true;
+        else if(param == "x")
+            wear_dump_level = 1;
+        else if(param == "X")
+            wear_dump_level = 1;
+        else if(param == "?" || param == "help")
+        {
+            c->con.print("Oh no! Someone has to write the help text!\n");
+            return CR_OK;
+        }
+        else
+        {
+            c->con.printerr("Parameter '%s' is not valid. See 'cleanowned help'.\n",param.c_str());
+            return CR_FAILURE;
         }
     }
+    DFHack::Materials *Materials = c->getMaterials();
+    DFHack::Items *Items = c->getItems();
+    DFHack::Creatures *Creatures = c->getCreatures();
+    DFHack::Translation *Tran = c->getTranslation();
 
-    DFHack::Process * p;
-    unsigned int i;
-    DFHack::ContextManager DFMgr("Memory.xml");
-    DFHack::Context * DF;
-    try
-    {
-        DF = DFMgr.getSingleContext();
-        DF->Attach();
-    }
-    catch (exception& e)
+    uint32_t num_creatures;
+    bool ok = true;
+    ok &= Materials->ReadAllMaterials();
+    ok &= Creatures->Start(num_creatures);
+    ok &= Tran->Start();
+
+    vector<t_item *> p_items;
+    ok &= Items->readItemVector(p_items);
+    if(!ok)
     {
-        cerr << e.what() << endl;
-        if(temporary_terminal)
-            cin.ignore();
-        return 1;
+        c->con.printerr("Can't continue due to offset errors.\n");
+        c->Resume();
+        return CR_FAILURE;
     }
+    c->con.print("Found total %d items.\n", p_items.size());
 
-    DFHack::VersionInfo * mem = DF->getMemoryInfo();
-    DFHack::Materials *Materials = DF->getMaterials();
-    DFHack::Items *Items = DF->getItems();
-    DFHack::Creatures *Creatures = DF->getCreatures();
-    DFHack::Translation *Tran = DF->getTranslation();
-
-    Materials->ReadAllMaterials();
-    uint32_t num_creatures;
-    Creatures->Start(num_creatures);
-    Tran->Start();
-
-    p = DF->getProcess();
-    DFHack::OffsetGroup* itemGroup = mem->getGroup("Items");
-    unsigned vector_addr = itemGroup->getAddress("items_vector");
-    DFHack::DfVector <uint32_t> p_items (p, vector_addr);
-    uint32_t size = p_items.size();
-
-    printf("Found total %d items.\n", size);
-
-    for (i=0;i<size;i++)
+    for (std::size_t i=0; i < p_items.size(); i++)
     {
-        uint32_t curItem = p_items[i];
+        t_item * curItem = p_items[i];
         DFHack::dfh_item itm;
         Items->readItem(curItem, itm);
 
         bool confiscate = false;
         bool dump = false;
 
-        if (!itm.base.flags.owned) {
+        if (!itm.base->flags.owned)
+        {
             int32_t owner = Items->getItemOwnerID(itm);
-            if (owner >= 0) {
-                printf("Fixing a misflagged item: ");
+            if (owner >= 0)
+            {
+                c->con.print("Fixing a misflagged item: ");
                 confiscate = true;
             }
             else
+            {
                 continue;
+            }
         }
 
         std::string name = Items->getItemClass(itm.matdesc.itemType);
 
-        if (itm.base.flags.rotten)
+        if (itm.base->flags.rotten)
         {
-            printf("Confiscating a rotten item: \t");
+            c->con.print("Confiscating a rotten item: \t");
             confiscate = true;
         }
-        else if (itm.base.flags.on_ground &&
+        else if (itm.base->flags.on_ground &&
                  (name == "food" || name == "meat" || name == "plant"))
         {
-            printf("Confiscating a dropped foodstuff: \t");
+            c->con.print("Confiscating a dropped foodstuff: \t");
             confiscate = true;
         }
         else if (itm.wear_level >= wear_dump_level)
         {
-            printf("Confiscating and dumping a worn item: \t");
+            c->con.print("Confiscating and dumping a worn item: \t");
             confiscate = true;
             dump = true;
         }
-        else if (dump_scattered && itm.base.flags.on_ground)
+        else if (dump_scattered && itm.base->flags.on_ground)
         {
-            printf("Confiscating and dumping litter: \t");
+            c->con.print("Confiscating and dumping litter: \t");
             confiscate = true;
             dump = true;
         }
         else if (confiscate_all)
         {
-            printf("Confiscating: \t");
+            c->con.print("Confiscating: \t");
             confiscate = true;
         }
 
@@ -140,14 +154,14 @@ int main (int argc, char *argv[])
         {
             if (!dry_run) {
                 if (!Items->removeItemOwner(itm, Creatures))
-                    printf("(unsuccessfully) ");
+                    c->con.print("(unsuccessfully) ");
                 if (dump)
-                    itm.base.flags.dump = 1;
+                    itm.base->flags.dump = 1;
 
                 Items->writeItem(itm);
             }
 
-            printf(
+            c->con.print(
                 "%s (wear %d)",
                 Items->getItemDescription(itm, Materials).c_str(),
                 itm.wear_level
@@ -167,10 +181,10 @@ int main (int argc, char *argv[])
                     info += std::string(" '") + temp.name.nickname + "'";
                 info += " ";
                 info += Tran->TranslateName(temp.name,false);
-                printf(", owner %s", info.c_str());
+                c->con.print(", owner %s", info.c_str());
             }
 
-            printf("\n");
+            c->con.print("\n");
 /*
             printf(
                 "%5d: %08x %08x (%d,%d,%d) #%08x [%d] %s - %s %s\n",
@@ -185,10 +199,5 @@ int main (int argc, char *argv[])
                   */
         }
     }
-    if(temporary_terminal)
-    {
-        cout << "Done. Press any key to continue" << endl;
-        cin.ignore();
-    }
-    return 0;
+    return CR_OK;
 }
diff --git a/plugins/cleartask.cpp b/plugins/cleartask.cpp
index 0a9e521bf..8eb3ff72d 100644
--- a/plugins/cleartask.cpp
+++ b/plugins/cleartask.cpp
@@ -8,70 +8,62 @@
 #include <vector>
 using namespace std;
 
-#include <DFHack.h>
-#include <dfhack/DFVector.h>
-#include <dfhack/DFTypes.h>
+#include <dfhack/Core.h>
+#include <dfhack/Console.h>
+#include <dfhack/Export.h>
+#include <dfhack/PluginManager.h>
+#include <dfhack/modules/Items.h>
+#include <dfhack/Types.h>
 #include <dfhack/extra/termutil.h>
+using namespace DFHack;
 
-int main ()
+DFhackCExport command_result df_cleartask (Core * c, vector <string> & parameters);
+
+DFhackCExport const char * plugin_name ( void )
 {
-    bool temporary_terminal = TemporaryTerminal();
-    DFHack::Process * p;
-    unsigned int i;
-    DFHack::ContextManager DFMgr("Memory.xml");
-    DFHack::Context * DF;
-    DFHack::Items * Items;
-    try
-    {
-        DF = DFMgr.getSingleContext();
-        DF->Attach();
-    }
-    catch (exception& e)
-    {
-        cerr << e.what() << endl;
-        if(temporary_terminal)
-            cin.ignore();
-        return 1;
-    }
+    return "cleartask";
+}
 
-    p = DF->getProcess();
+DFhackCExport command_result plugin_init ( Core * c, std::vector <PluginCommand> &commands)
+{
+    commands.clear();
+    commands.push_back(PluginCommand("cleartask",
+                                     "Clears the \"tasked\" flag on all items. This is dangerous. Only use after reclaims.",
+                                     df_cleartask));
+    return CR_OK;
+}
+
+DFhackCExport command_result plugin_shutdown ( Core * c )
+{
+    return CR_OK;
+}
+
+DFhackCExport command_result df_cleartask (Core * c, vector <string> & parameters)
+{
+    c->Suspend();
+    DFHack::Items * Items = c->getItems();
     uint32_t item_vec_offset = 0;
-    try
-    {
-        Items = DF->getItems();
-        DFHack::OffsetGroup* itemGroup = p->getDescriptor()->getGroup("Items");
-        item_vec_offset = itemGroup->getAddress("items_vector");
-    }
-    catch(DFHack::Error::All & e)
+    vector <t_item *> p_items;
+    if(!Items->readItemVector(p_items))
     {
-        cerr << "Fatal error, exiting :(" << endl << e.what() << endl;
-        if(temporary_terminal)
-            cin.ignore();
-        return 1;
+        c->con.printerr("Can't read items...\n");
+        c->Resume();
+        return CR_FAILURE;
     }
 
-    DFHack::DfVector <uint32_t> p_items (p, item_vec_offset);
-    uint32_t size = p_items.size();
-
     int numtasked = 0;
-    for (i=0;i<size;i++)
+    for (std::size_t i = 0; i < p_items.size(); i++)
     {
+        t_item * ptr;
         DFHack::dfh_item temp;
         Items->readItem(p_items[i],temp);
-        DFHack::t_itemflags & flags = temp.base.flags;
-        if (flags.in_job)
+        if (ptr->flags.in_job)
         {
-            flags.in_job = 0;
-            Items->writeItem(temp);
+            ptr->flags.in_job = 0;
             numtasked++;
         }
     }
-    cout << "Found and untasked " << numtasked << " items." << endl;
-
-    if(temporary_terminal)
-    {
-        cout << "Done. Press any key to continue" << endl;
-        cin.ignore();
-    }
-    return 0;
+    c->con.print("Found and untasked %d items.\n", numtasked);
+    c->Resume();
+    return CR_OK;
 }
diff --git a/plugins/deramp.cpp b/plugins/deramp.cpp
index d660c9ed2..3f6fd73c3 100644
--- a/plugins/deramp.cpp
+++ b/plugins/deramp.cpp
@@ -7,14 +7,37 @@
 #include <assert.h>
 #include <string.h>
 using namespace std;
+#include <dfhack/Core.h>
+#include <dfhack/Console.h>
+#include <dfhack/Export.h>
+#include <dfhack/PluginManager.h>
+#include <dfhack/modules/Maps.h>
+#include <dfhack/TileTypes.h>
+using namespace DFHack;
 
-#include <DFHack.h>
-#include <dfhack/DFTileTypes.h>
-#include <dfhack/extra/termutil.h>
+DFhackCExport command_result df_deramp (Core * c, vector <string> & parameters);
 
-int main (void)
+DFhackCExport const char * plugin_name ( void )
+{
+    return "deramp";
+}
+
+DFhackCExport command_result plugin_init ( Core * c, std::vector <PluginCommand> &commands)
+{
+    commands.clear();
+    commands.push_back(PluginCommand("deramp",
+                                     "De-ramp.  All ramps marked for removal are replaced with floors.",
+                                     df_deramp));
+    return CR_OK;
+}
+
+DFhackCExport command_result plugin_shutdown ( Core * c )
+{
+    return CR_OK;
+}
+
+DFhackCExport command_result df_deramp (Core * c, vector <string> & parameters)
 {
-    bool temporary_terminal = TemporaryTerminal();
     uint32_t x_max,y_max,z_max;
     uint32_t num_blocks = 0;
     uint32_t bytes_read = 0;
@@ -29,33 +52,15 @@ int main (void)
     int count=0;
     int countbad=0;
 
-    DFHack::ContextManager DFMgr("Memory.xml");
-    DFHack::Context *DF = DFMgr.getSingleContext();
-
-    //sanity check
-    assert( sizeof(designations) == (16*16*sizeof(DFHack::t_designation)) );
-
-    //Init
-    try
-    {
-        DF->Attach();
-    }
-    catch (exception& e)
-    {
-        cerr << e.what() << endl;
-        if(temporary_terminal)
-            cin.ignore();
-        return 1;
-    }
-    DFHack::Maps *Mapz = DF->getMaps();
+    c->Suspend();
+    DFHack::Maps *Mapz = c->getMaps();
 
     // init the map
     if (!Mapz->Start())
     {
-        cerr << "Can't init map." << endl;
-        if(temporary_terminal)
-            cin.ignore();
-        return 1;
+        c->con.printerr("Can't init map.\n");
+        c->Resume();
+        return CR_FAILURE;
     }
 
     Mapz->getSize(x_max,y_max,z_max);
@@ -69,12 +74,12 @@ int main (void)
         {
             for (uint32_t z = 0; z< z_max;z++)
             {
-                if (Mapz->isValidBlock(x,y,z))
+                if (Mapz->getBlock(x,y,z))
                 {
                     dirty= false;
                     Mapz->ReadDesignations(x,y,z, &designations);
                     Mapz->ReadTileTypes(x,y,z, &tiles);
-                    if (Mapz->isValidBlock(x,y,z+1))
+                    if (Mapz->getBlock(x,y,z+1))
                     {
                         Mapz->ReadTileTypes(x,y,z+1, &tilesAbove);
                     }
@@ -124,7 +129,7 @@ int main (void)
                     {
                         Mapz->WriteDesignations(x,y,z, &designations);
                         Mapz->WriteTileTypes(x,y,z, &tiles);
-                        if (Mapz->isValidBlock(x,y,z+1))
+                        if (Mapz->getBlock(x,y,z+1))
                         {
                             Mapz->WriteTileTypes(x,y,z+1, &tilesAbove);
                         }
@@ -134,13 +139,10 @@ int main (void)
             }
         }
     }
-    DF->Detach();
-    cout << "Found and changed " << count << " tiles." << endl;
-    cout << "Fixed " << countbad << " bad down ramps." << endl;
-    if(temporary_terminal)
-    {
-        cout << "Done. Press any key to continue" << endl;
-        cin.ignore();
-    }
-    return 0;
+    c->Resume();
+    if(count)
+        c->con.print("Found and changed %d tiles.",count);
+    if(countbad)
+        c->con.print("Fixed %d bad down ramps.",countbad);
+    return CR_OK;
 }