diff --git a/conf/e2/config.json b/conf/e2/config.json
index beb582a97..c2514706a 100644
--- a/conf/e2/config.json
+++ b/conf/e2/config.json
@@ -1,30 +1,28 @@
 {
     "include": [
-        "config://keywords.json",
-        "config://calendar.json",
-        "config://prefixes.json",
-        "config://e2/terrains.json",
-        "config://e2/locales.xml",
-        "config://e2/rules.xml",
-        "rules://core/ships.xml",
-        "rules://core/spoils.xml",
-        "rules://core/common/buildings.xml",
-        "rules://core/common/items.xml",
-        "rules://core/common/resources.xml",
-        "rules://core/common/luxuries.xml",
-        "rules://core/common/herbs.xml",
-        "rules://core/common/potions.xml",
-        "rules://core/common/armor.xml",
-        "rules://core/common/weapons.xml",
-        "rules://eressea/races.xml",
-        "rules://eressea/artrewards.xml",
-        "rules://eressea/buildings.xml",
-        "rules://eressea/familiars.xml",
-        "rules://eressea/buildings.xml",
-        "rules://eressea/equipment.xml",
-        "rules://eressea/items.xml",
-        "rules://eressea/spells.xml",
-        "rules://adamantium.xml"
+        "config://conf/keywords.json",
+        "config://conf/calendar.json",
+        "config://conf/prefixes.json",
+        "config://conf/e2/terrains.json",
+        "config://conf/e2/items.json",
+        "config://conf/e2/locales.json",
+        "config://conf/e2/rules.xml",
+        "config://res/core/ships.xml",
+        "config://res/core/spoils.xml",
+        "config://res/core/common/buildings.xml",
+        "config://res/eressea/buildings.xml",
+        "config://res/buildings/castle.xml",
+        "config://res/eressea/races.xml",
+        "config://res/eressea/artrewards.xml",
+        "config://res/eressea/familiars.xml",
+        "config://res/eressea/equipment.xml",
+        "config://res/eressea/spells.xml",
+        "config://res/eressea/spellbooks/gray.xml",
+        "config://res/eressea/spellbooks/gwyrrd.xml",
+        "config://res/eressea/spellbooks/draig.xml",
+        "config://res/eressea/spellbooks/illaun.xml",
+        "config://res/eressea/spellbooks/cerddor.xml",
+        "config://res/eressea/spellbooks/tybied.xml"
     ],
     "disabled": [
         "jsreport"
diff --git a/conf/e2/items.json b/conf/e2/items.json
new file mode 100644
index 000000000..dc4664cdc
--- /dev/null
+++ b/conf/e2/items.json
@@ -0,0 +1,49 @@
+{
+    "include": [
+        "config://res/core/common/items.xml",
+        "config://res/core/armor/chainmail.xml",
+        "config://res/core/armor/laenmail.xml",
+        "config://res/core/armor/laenshield.xml",
+        "config://res/core/armor/plate.xml",
+        "config://res/core/armor/rustychainmail.xml",
+        "config://res/core/armor/rustyshield.xml",
+        "config://res/core/armor/shield.xml",
+        "config://res/core/resources/cart.xml",
+        "config://res/core/resources/horse.xml",
+        "config://res/core/resources/hp.xml",
+        "config://res/core/resources/iron.xml",
+        "config://res/core/resources/laen.xml",
+        "config://res/core/resources/log.xml",
+        "config://res/core/resources/mallorn.xml",
+        "config://res/core/resources/mallornseed.xml",
+        "config://res/core/resources/seed.xml",
+        "config://res/core/resources/peasant.xml",
+        "config://res/core/resources/stone.xml",
+        "config://res/core/common/luxuries.xml",
+        "config://res/core/common/herbs.xml",
+        "config://res/core/common/potions.xml",
+        "config://res/core/weapons/axe.xml",
+        "config://res/core/weapons/bow.xml",
+        "config://res/core/weapons/catapult.xml",
+        "config://res/core/weapons/crossbow.xml",
+        "config://res/core/weapons/firesword.xml",
+        "config://res/core/weapons/greatbow.xml",
+        "config://res/core/weapons/greatsword.xml",
+        "config://res/core/weapons/halberd.xml",
+        "config://res/core/weapons/laensword.xml",
+        "config://res/core/weapons/lance.xml",
+        "config://res/core/weapons/mallornbow.xml",
+        "config://res/core/weapons/mallorncrossbow.xml",
+        "config://res/core/weapons/mallornlance.xml",
+        "config://res/core/weapons/mallornspear.xml",
+        "config://res/core/weapons/runesword.xml",
+        "config://res/core/weapons/rustyaxe.xml",
+        "config://res/core/weapons/rustygreatsword.xml",
+        "config://res/core/weapons/rustyhalberd.xml",
+        "config://res/core/weapons/rustysword.xml",
+        "config://res/core/weapons/spear.xml",
+        "config://res/core/weapons/sword.xml",
+        "config://res/eressea/items.xml",
+        "config://res/adamantium.xml"
+    ]
+}
diff --git a/conf/e2/locales.json b/conf/e2/locales.json
new file mode 100644
index 000000000..4a3a100ef
--- /dev/null
+++ b/conf/e2/locales.json
@@ -0,0 +1,14 @@
+{
+    "include": [
+      "config://res/core/messages.xml",
+      "config://res/core/de/strings.xml",
+      "config://res/core/en/strings.xml",
+      "config://res/eressea/strings.xml",
+      "config://res/eressea/spellinfo.xml",
+      "config://res/names-undead.xml",
+      "config://res/names-skeletons.xml",
+      "config://res/names-zombies.xml",
+      "config://res/names-ghouls.xml",
+      "config://res/names-dragons.xml"
+    ]
+}
diff --git a/conf/e2/locales.xml b/conf/e2/locales.xml
deleted file mode 100644
index 7a31bbc17..000000000
--- a/conf/e2/locales.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0"?>
-<eressea xmlns:xi="http://www.w3.org/2001/XInclude">
-  <xi:include href="config://core/messages.xml"/>
-  <xi:include href="config://core/de/strings.xml"/>
-  <xi:include href="config://core/en/strings.xml"/>
-  <xi:include href="config://game/strings.xml"/>
-  <xi:include href="config://game/spellinfo.xml" />
-  <xi:include href="config://default/names-undead.xml"/>
-  <xi:include href="config://default/names-skeletons.xml"/>
-  <xi:include href="config://default/names-zombies.xml"/>
-  <xi:include href="config://default/names-ghouls.xml"/>
-  <xi:include href="config://default/names-dragons.xml"/>
-</eressea>
diff --git a/res/adamantium.xml b/res/adamantium.xml
index e1f0643e2..563299e51 100644
--- a/res/adamantium.xml
+++ b/res/adamantium.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8" ?>
+<eressea>
 <resources>
 
   <resource name="adamantium" limited="yes" material="yes">
@@ -32,3 +33,4 @@
   </resource>
 
 </resources>
+</eressea>
diff --git a/res/buildings/castle-2.xml b/res/buildings/castle-2.xml
index accb92c08..8117524ff 100644
--- a/res/buildings/castle-2.xml
+++ b/res/buildings/castle-2.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <building name="castle" fort="yes" taxes="100">
   <construction skill="building" minskill="1" maxsize="10" name="site">
     <requirement type="stone" quantity="1"/>
@@ -19,3 +20,4 @@
     <requirement type="stone" quantity="1"/>
   </construction>
 </building>
+</eressea>
diff --git a/res/buildings/castle.xml b/res/buildings/castle.xml
index ce64e8030..14d959ed7 100644
--- a/res/buildings/castle.xml
+++ b/res/buildings/castle.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<buildings>
 <building name="castle" fort="yes">
   <construction skill="building" minskill="1" maxsize="2" name="site">
     <requirement type="stone" quantity="1"/>
@@ -22,3 +24,5 @@
     <requirement type="stone" quantity="1"/>
   </construction>
 </building>
+</buildings>
+</eressea>
diff --git a/res/core/armor/chainmail.xml b/res/core/armor/chainmail.xml
index b03221b35..048a94ae9 100644
--- a/res/core/armor/chainmail.xml
+++ b/res/core/armor/chainmail.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="chainmail">
   <item weight="200" score="90">
     <construction skill="armorer" minskill="3">
@@ -7,3 +8,4 @@
     <armor ac="3" penalty="0.15" magres="0.0"/>
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/armor/laenmail.xml b/res/core/armor/laenmail.xml
index 0e1411945..f26e5363b 100644
--- a/res/core/armor/laenmail.xml
+++ b/res/core/armor/laenmail.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="laenmail">
   <item weight="100" score="1000">
     <construction skill="armorer" minskill="9">
@@ -7,3 +8,4 @@
     <armor ac="6" penalty="0.0" magres="0.3" laen="yes" />
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/armor/laenshield.xml b/res/core/armor/laenshield.xml
index 8a9d6d5c3..03f9f479a 100644
--- a/res/core/armor/laenshield.xml
+++ b/res/core/armor/laenshield.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="laenshield">
   <item weight="0" score="1000">
     <construction skill="armorer" minskill="7">
@@ -7,3 +8,4 @@
     <armor ac="2" penalty="-0.25" magres="0.3" laen="yes" shield="yes" />
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/armor/plate.xml b/res/core/armor/plate.xml
index 97d855a73..f43a704b8 100644
--- a/res/core/armor/plate.xml
+++ b/res/core/armor/plate.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="plate">
   <item weight="400" score="150">
     <construction skill="armorer" minskill="4">
@@ -7,3 +8,4 @@
     <armor ac="5" penalty="0.30" magres="0.0"/>
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/armor/rustychainmail.xml b/res/core/armor/rustychainmail.xml
index b46380634..f7947bbb1 100644
--- a/res/core/armor/rustychainmail.xml
+++ b/res/core/armor/rustychainmail.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="rustychainmail">
   <item weight="200" score="30">
     <construction skill="armorer" minskill="3">
@@ -7,4 +8,4 @@
     <armor ac="2" penalty="0.30" magres="0.0"/>
   </item>
 </resource>
-
+</resources></eressea>
diff --git a/res/core/armor/rustyshield.xml b/res/core/armor/rustyshield.xml
index 56a8abe5a..218b4fa6a 100644
--- a/res/core/armor/rustyshield.xml
+++ b/res/core/armor/rustyshield.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="rustyshield">
   <item weight="100" score="10">
     <construction skill="armorer" minskill="2">
@@ -7,3 +8,4 @@
     <armor ac="1" penalty="0.0" magres="0.0" shield="yes"/>
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/armor/shield.xml b/res/core/armor/shield.xml
index b0ee7de3a..af099dc2e 100644
--- a/res/core/armor/shield.xml
+++ b/res/core/armor/shield.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea><resources>
 <resource name="shield">
   <item weight="100" score="30">
     <construction skill="armorer" minskill="2">
@@ -7,3 +8,4 @@
     <armor ac="1" penalty="-0.15" magres="0.0" shield="yes"/>
   </item>
 </resource>
+</resources></eressea>
diff --git a/res/core/common/armor.xml b/res/core/common/armor.xml
deleted file mode 100644
index 58abae47f..000000000
--- a/res/core/common/armor.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0"?>
-<resources xmlns:xi="http://www.w3.org/2001/XInclude">
-  <xi:include href="../armor/chainmail.xml"/>
-  <xi:include href="../armor/laenmail.xml"/>
-  <xi:include href="../armor/laenshield.xml"/>
-  <xi:include href="../armor/plate.xml"/>
-  <xi:include href="../armor/rustychainmail.xml"/>
-  <xi:include href="../armor/rustyshield.xml"/>
-  <xi:include href="../armor/shield.xml"/>
-</resources>
diff --git a/res/core/common/buildings.xml b/res/core/common/buildings.xml
index 932326f1c..3b8719b3b 100644
--- a/res/core/common/buildings.xml
+++ b/res/core/common/buildings.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <buildings>
   <building name="wormhole" maxsize="4" maxcapacity="4" nobuild="yes" nodestroy="yes" unique="yes" />
   <building name="illusioncastle" capacity="0" maxcapacity="0" maxsize="0" nobuild="yes"/>
@@ -167,4 +168,4 @@
   </building>
 
 </buildings>
-
+</eressea>
diff --git a/res/core/common/construction.xml b/res/core/common/construction.xml
deleted file mode 100644
index 089ddfe1c..000000000
--- a/res/core/common/construction.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0"?>
-<!-- TODO: this does not work yet -->
-<production>
-  <construction resource="laenshield" skill="armorer" minskill="7">
-    <requirement type="laen" quantity="1"/>
-  </construction>
-  <construction resource="laenmail" skill="armorer" minskill="9">
-    <requirement type="laen" quantity="3"/>
-  </construction>
-</production>
diff --git a/res/core/common/herbs.xml b/res/core/common/herbs.xml
index d7d0ef2e6..9175b4a42 100644
--- a/res/core/common/herbs.xml
+++ b/res/core/common/herbs.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <resources>
   <!-- this file contains herbs that are part of the alchemy system -->
 
@@ -87,3 +88,4 @@
   </resource>
 
 </resources>
+</eressea>
diff --git a/res/core/common/luxuries.xml b/res/core/common/luxuries.xml
index bdf9c110b..05e125b33 100644
--- a/res/core/common/luxuries.xml
+++ b/res/core/common/luxuries.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <resources>
   <!-- this file contains luxury items that are part of the trade system -->
   <resource name="balm">
@@ -24,3 +25,4 @@
   </resource>
 
 </resources>
+</eressea>
diff --git a/res/core/common/potions.xml b/res/core/common/potions.xml
index 4812727dd..bb4556eb7 100644
--- a/res/core/common/potions.xml
+++ b/res/core/common/potions.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <resources>
   <!-- this file contains potions that are part of the alchemy system -->
 
@@ -180,3 +181,4 @@
   </resource>
 
 </resources>
+</eressea>
diff --git a/res/core/common/resources.xml b/res/core/common/resources.xml
deleted file mode 100644
index 91d0e8afc..000000000
--- a/res/core/common/resources.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0"?>
-<resources xmlns:xi="http://www.w3.org/2001/XInclude">
-  <!--
-  this file contains the most important items and resources any game will
-  want to use. Or maybe you just have to roll your own file.
-  -->
-
-  <xi:include href="../resources/cart.xml"/>
-  <xi:include href="../resources/horse.xml"/>
-  <xi:include href="../resources/hp.xml"/>
-  <xi:include href="../resources/iron.xml"/>
-  <xi:include href="../resources/laen.xml"/>
-  <xi:include href="../resources/log.xml"/>
-  <xi:include href="../resources/mallorn.xml"/>
-  <xi:include href="../resources/mallornseed.xml"/>
-  <xi:include href="../resources/seed.xml"/>
-  <xi:include href="../resources/peasant.xml"/>
-  <xi:include href="../resources/stone.xml"/>
-</resources>
diff --git a/res/core/common/weapons.xml b/res/core/common/weapons.xml
deleted file mode 100644
index e91b15e69..000000000
--- a/res/core/common/weapons.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0"?>
-<resources xmlns:xi="http://www.w3.org/2001/XInclude">
-  <xi:include href="../weapons/axe.xml"/>
-  <xi:include href="../weapons/bow.xml"/>
-  <xi:include href="../weapons/catapult.xml"/>
-  <xi:include href="../weapons/crossbow.xml"/>
-  <xi:include href="../weapons/firesword.xml"/>
-  <xi:include href="../weapons/greatbow.xml"/>
-  <xi:include href="../weapons/greatsword.xml"/>
-  <xi:include href="../weapons/halberd.xml"/>
-  <xi:include href="../weapons/laensword.xml"/>
-  <xi:include href="../weapons/lance.xml"/>
-  <xi:include href="../weapons/mallornbow.xml"/>
-  <xi:include href="../weapons/mallorncrossbow.xml"/>
-  <xi:include href="../weapons/mallornlance.xml"/>
-  <xi:include href="../weapons/mallornspear.xml"/>
-  <xi:include href="../weapons/runesword.xml"/>
-  <xi:include href="../weapons/rustyaxe.xml"/>
-  <xi:include href="../weapons/rustygreatsword.xml"/>
-  <xi:include href="../weapons/rustyhalberd.xml"/>
-  <xi:include href="../weapons/rustysword.xml"/>
-  <xi:include href="../weapons/spear.xml"/>
-  <xi:include href="../weapons/sword.xml"/>
-</resources>
diff --git a/res/core/resources/cart.xml b/res/core/resources/cart.xml
index 17dbdcb41..c98e202b0 100644
--- a/res/core/resources/cart.xml
+++ b/res/core/resources/cart.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="cart">
   <item capacity="14000" weight="4000" score="60" vehicle="yes" big="yes">
     <construction skill="cartmaking" minskill="1">
@@ -6,3 +8,5 @@
     </construction>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/horse.xml b/res/core/resources/horse.xml
index 608fca20a..6021692e0 100644
--- a/res/core/resources/horse.xml
+++ b/res/core/resources/horse.xml
@@ -1,6 +1,10 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="horse" limited="yes">
   <item big="yes" weight="5000" score="10" capacity="7000" animal="yes">
     <construction skill="training" minskill="1" />
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/hp.xml b/res/core/resources/hp.xml
index aa0ad4d29..5d038e7b2 100644
--- a/res/core/resources/hp.xml
+++ b/res/core/resources/hp.xml
@@ -1,4 +1,8 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="hp" pooled="false">
   <function name="change" value="lua_changeresource"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/iron.xml b/res/core/resources/iron.xml
index 1aff826fc..38ddb33c8 100644
--- a/res/core/resources/iron.xml
+++ b/res/core/resources/iron.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="iron" limited="yes" material="yes">
     <item weight="500" score="10">
         <construction skill="mining" minskill="1"/>
@@ -8,3 +10,5 @@
     <modifier building="mine" type="material" value="0.5"/>
     <modifier race="dwarf" type="material" value="0.6"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/laen.xml b/res/core/resources/laen.xml
index e584fe485..1c14c2eff 100644
--- a/res/core/resources/laen.xml
+++ b/res/core/resources/laen.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="laen" limited="yes" material="yes">
     <item weight="200" score="100">
         <construction skill="mining" minskill="7"/>
@@ -6,3 +8,5 @@
   <modifier building="mine" type="skill" value="1"/>
   <modifier type="require" building="mine"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/log.xml b/res/core/resources/log.xml
index e3710d496..5720c2fd4 100644
--- a/res/core/resources/log.xml
+++ b/res/core/resources/log.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="log" limited="yes">
     <item weight="500" score="10">
         <construction skill="forestry" minskill="1"/>
@@ -6,3 +8,5 @@
     <modifier building="sawmill" type="skill" value="1"/>
     <modifier building="sawmill" type="material" value="0.5"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/mallorn.xml b/res/core/resources/mallorn.xml
index 3dff091c6..8e50785ca 100644
--- a/res/core/resources/mallorn.xml
+++ b/res/core/resources/mallorn.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallorn" limited="yes">
     <item weight="500" score="30">
         <construction skill="forestry" minskill="2"/>
@@ -6,3 +8,5 @@
     <modifier building="sawmill" type="skill" value="1"/>
     <modifier building="sawmill" type="material" value="0.5"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/mallornseed.xml b/res/core/resources/mallornseed.xml
index 7a5a0310f..7a50c1233 100644
--- a/res/core/resources/mallornseed.xml
+++ b/res/core/resources/mallornseed.xml
@@ -1,6 +1,10 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallornseed" limited="yes">
   <item weight="10" score="100">
     <construction skill="herbalism" minskill="4"/>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/peasant.xml b/res/core/resources/peasant.xml
index bce23430c..8c5b22c19 100644
--- a/res/core/resources/peasant.xml
+++ b/res/core/resources/peasant.xml
@@ -1,4 +1,8 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="peasant" pooled="false">
   <function name="change" value="lua_changeresource"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/seed.xml b/res/core/resources/seed.xml
index 99f5f5804..6696b761f 100644
--- a/res/core/resources/seed.xml
+++ b/res/core/resources/seed.xml
@@ -1,6 +1,10 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="seed" limited="yes">
   <item weight="10" score="50">
     <construction skill="herbalism" minskill="3"/>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/resources/stone.xml b/res/core/resources/stone.xml
index e1c5651ed..b8f91eadc 100644
--- a/res/core/resources/stone.xml
+++ b/res/core/resources/stone.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="stone" limited="yes" material="yes">
     <item weight="6000" score="10" big="yes">
         <construction skill="quarrying" minskill="1"/>
@@ -7,3 +9,5 @@
     <modifier building="quarry" type="material" value="0.5"/>
     <modifier race="troll" type="material" value="0.75"/>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/ships.xml b/res/core/ships.xml
index 33d0dc52a..d26975285 100644
--- a/res/core/ships.xml
+++ b/res/core/ships.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <ships>
   <ship name="trireme" range="7" storm="1.00" damage="1.00" cargo="200000" cptskill="4" minskill="1" sumskill="120" opensea="yes">
     <coast terrain="plain"/>
@@ -73,4 +74,4 @@
   </ship>
 
 </ships>
-
+</eressea>
diff --git a/res/core/spoils.xml b/res/core/spoils.xml
index 952971cab..8cd39a455 100644
--- a/res/core/spoils.xml
+++ b/res/core/spoils.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <resources>
 
   <resource name="elfspoil">
@@ -57,3 +58,4 @@
   </resource>
 
 </resources>
+</eressea>
diff --git a/res/core/weapons/axe.xml b/res/core/weapons/axe.xml
index 3f97a5b8a..07f511a62 100644
--- a/res/core/weapons/axe.xml
+++ b/res/core/weapons/axe.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="axe">
   <item weight="200">
     <construction skill="weaponsmithing" minskill="3">
@@ -11,3 +13,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/bow.xml b/res/core/weapons/bow.xml
index 4fb9b2000..a62f90b58 100644
--- a/res/core/weapons/bow.xml
+++ b/res/core/weapons/bow.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="bow">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="2">
@@ -11,3 +13,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/catapult.xml b/res/core/weapons/catapult.xml
index e05c5a025..6312dd4d6 100644
--- a/res/core/weapons/catapult.xml
+++ b/res/core/weapons/catapult.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="catapult">
   <item weight="10000" big="yes">
     <construction skill="cartmaking" minskill="5">
@@ -12,3 +14,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/crossbow.xml b/res/core/weapons/crossbow.xml
index c7bf4715d..c048e3dcd 100644
--- a/res/core/weapons/crossbow.xml
+++ b/res/core/weapons/crossbow.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="crossbow">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="3">
@@ -11,3 +13,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/firesword.xml b/res/core/weapons/firesword.xml
index d716e6013..dc3b47af5 100644
--- a/res/core/weapons/firesword.xml
+++ b/res/core/weapons/firesword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="firesword">
   <item weight="100">
     <weapon magres="0.3" cut="true" skill="melee" offmod="1" defmod="1">
@@ -8,3 +10,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/greatbow.xml b/res/core/weapons/greatbow.xml
index 452ac0250..b30cae8c6 100644
--- a/res/core/weapons/greatbow.xml
+++ b/res/core/weapons/greatbow.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="greatbow">
   <modifier type="require" race="elf"/>
   <item weight="100">
@@ -15,3 +17,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/greatsword.xml b/res/core/weapons/greatsword.xml
index 56285f6af..af2420700 100644
--- a/res/core/weapons/greatsword.xml
+++ b/res/core/weapons/greatsword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="greatsword">
   <item weight="200" score="30">
     <construction skill="weaponsmithing" minskill="4">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/halberd.xml b/res/core/weapons/halberd.xml
index 7abc86902..8475d53e1 100644
--- a/res/core/weapons/halberd.xml
+++ b/res/core/weapons/halberd.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="halberd">
   <item weight="200">
     <construction skill="weaponsmithing" minskill="3">
@@ -12,3 +14,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/laensword.xml b/res/core/weapons/laensword.xml
index 3053d5f1b..325d25d10 100644
--- a/res/core/weapons/laensword.xml
+++ b/res/core/weapons/laensword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="laensword">
   <item weight="100" score="400">
     <construction skill="weaponsmithing" minskill="8">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/lance.xml b/res/core/weapons/lance.xml
index 4a02bc06f..9325494fa 100644
--- a/res/core/weapons/lance.xml
+++ b/res/core/weapons/lance.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="lance">
   <item weight="200">
     <construction skill="weaponsmithing" minskill="2">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/mallornbow.xml b/res/core/weapons/mallornbow.xml
index abdcc4810..9164d2c4b 100644
--- a/res/core/weapons/mallornbow.xml
+++ b/res/core/weapons/mallornbow.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallornbow">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="5">
@@ -14,3 +16,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/mallorncrossbow.xml b/res/core/weapons/mallorncrossbow.xml
index 385720d8c..e5ec685c0 100644
--- a/res/core/weapons/mallorncrossbow.xml
+++ b/res/core/weapons/mallorncrossbow.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallorncrossbow">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="5">
@@ -11,3 +13,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/mallornlance.xml b/res/core/weapons/mallornlance.xml
index 4024d4578..952839fda 100644
--- a/res/core/weapons/mallornlance.xml
+++ b/res/core/weapons/mallornlance.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallornlance">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="5">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/mallornspear.xml b/res/core/weapons/mallornspear.xml
index 516f59540..ee827c754 100644
--- a/res/core/weapons/mallornspear.xml
+++ b/res/core/weapons/mallornspear.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="mallornspear">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="5">
@@ -12,3 +14,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/runesword.xml b/res/core/weapons/runesword.xml
index 1bfae2544..6f23697f2 100644
--- a/res/core/weapons/runesword.xml
+++ b/res/core/weapons/runesword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="runesword">
   <item weight="100" score="2000">
     <weapon cut="true" magical="yes" skill="melee" offmod="2" defmod="2">
@@ -8,3 +10,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/rustyaxe.xml b/res/core/weapons/rustyaxe.xml
index fea6b8642..ff4172059 100644
--- a/res/core/weapons/rustyaxe.xml
+++ b/res/core/weapons/rustyaxe.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="rustyaxe">
   <item weight="200">
     <construction skill="weaponsmithing" minskill="3">
@@ -11,3 +13,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/rustygreatsword.xml b/res/core/weapons/rustygreatsword.xml
index 7f21cce17..b67e2cf4b 100644
--- a/res/core/weapons/rustygreatsword.xml
+++ b/res/core/weapons/rustygreatsword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="rustygreatsword">
   <item weight="200" score="20">
     <construction skill="weaponsmithing" minskill="4">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/rustyhalberd.xml b/res/core/weapons/rustyhalberd.xml
index 3f0bd93b7..9d3c4ae6b 100644
--- a/res/core/weapons/rustyhalberd.xml
+++ b/res/core/weapons/rustyhalberd.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="rustyhalberd">
   <item weight="200" score="20">
     <construction skill="weaponsmithing" minskill="3">
@@ -12,3 +14,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/rustysword.xml b/res/core/weapons/rustysword.xml
index 2a76c109b..e5c9a9442 100644
--- a/res/core/weapons/rustysword.xml
+++ b/res/core/weapons/rustysword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="rustysword">
   <item weight="100" score="10">
     <construction skill="weaponsmithing" minskill="3">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/spear.xml b/res/core/weapons/spear.xml
index 32a79b9a2..e81f608ab 100644
--- a/res/core/weapons/spear.xml
+++ b/res/core/weapons/spear.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="spear">
   <item weight="100">
     <construction skill="weaponsmithing" minskill="2">
@@ -12,3 +14,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/core/weapons/sword.xml b/res/core/weapons/sword.xml
index 4bd2ebdb1..21b481079 100644
--- a/res/core/weapons/sword.xml
+++ b/res/core/weapons/sword.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<eressea>
+<resources>
 <resource name="sword">
   <item weight="100" score="30">
     <construction skill="weaponsmithing" minskill="3">
@@ -10,3 +12,5 @@
     </weapon>
   </item>
 </resource>
+</resources>
+</eressea>
diff --git a/res/eressea/artrewards.xml b/res/eressea/artrewards.xml
index b18fd5b20..9a144da07 100644
--- a/res/eressea/artrewards.xml
+++ b/res/eressea/artrewards.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<resources>
+<eressea><resources>
 
   <resource name="aurapotion50">
     <function name="change" value="changeitem"/>
@@ -11,4 +11,4 @@
     <item weight="0" use="yes"/>
   </resource>
 
-</resources>
+</resources></eressea>
diff --git a/res/eressea/buildings.xml b/res/eressea/buildings.xml
index 1559fd987..b3ab4b6c0 100644
--- a/res/eressea/buildings.xml
+++ b/res/eressea/buildings.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0"?>
+<eressea>
 <buildings xmlns:xi="http://www.w3.org/2001/XInclude">
-  <xi:include href="../buildings/castle.xml"/>
   <building name="temple" maxsize="50" maxcapacity="2" nobuild="yes" nodestroy="yes" unique="yes" auraregen="1.00" />
   <building name="portal" maxsize="2" maxcapacity="2" nobuild="yes" nodestroy="yes" unique="yes" />
   <building name="pavilion" maxsize="2" maxcapacity="2" nobuild="yes" nodestroy="yes" unique="yes" />
   <building name="artacademy" maxsize="100" nobuild="yes" nodestroy="yes" unique="yes"/>
 </buildings>
+</eressea>
diff --git a/res/eressea/equipment.xml b/res/eressea/equipment.xml
index e4d48aefe..94d0deb07 100644
--- a/res/eressea/equipment.xml
+++ b/res/eressea/equipment.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<equipment>
+<eressea><equipment>
 
   <!-- one equipment-set per player-race for the first unit in a faction -->
   <set name="seed_dwarf">
@@ -271,3 +271,5 @@
   </set>
 
 </equipment>
+</eressea>
+
diff --git a/res/eressea/familiars.xml b/res/eressea/familiars.xml
index 7e9bb75dc..112a82420 100644
--- a/res/eressea/familiars.xml
+++ b/res/eressea/familiars.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0"?>
+<eressea>
 <equipment>
 
   <!-- equipment given to familiars -->
@@ -129,4 +130,4 @@
   </set>
 
 </equipment>
-
+</eressea>
diff --git a/res/eressea/items.xml b/res/eressea/items.xml
index 3f5cc3d17..2cfa9e653 100644
--- a/res/eressea/items.xml
+++ b/res/eressea/items.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" ?>
+<eressea>
 <resources>
 
 <!-- xmas gimmicks -->
@@ -128,3 +129,4 @@
   <!-- christmas items: end -->
 
 </resources>
+</eressea>
diff --git a/res/eressea/races.xml b/res/eressea/races.xml
index cdd483851..654a859bd 100644
--- a/res/eressea/races.xml
+++ b/res/eressea/races.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" ?>
+<eressea>
 <races xmlns:xi="http://www.w3.org/2001/XInclude">
 
   <race name="snowman" magres="80" maxaura="0.000000"
@@ -1214,3 +1215,4 @@
     <attack type="6" spell="aura_of_fear" level="12"/>
   </race>
 </races>
+</eressea>
diff --git a/res/eressea/spells.xml b/res/eressea/spells.xml
index 6b2e43a15..089ec1a6c 100644
--- a/res/eressea/spells.xml
+++ b/res/eressea/spells.xml
@@ -1,12 +1,6 @@
 <?xml version="1.0"?>
-<spells xmlns:xi="http://www.w3.org/2001/XInclude">
-
-  <xi:include href="spellbooks/gray.xml"/>
-  <xi:include href="spellbooks/gwyrrd.xml"/>
-  <xi:include href="spellbooks/draig.xml"/>
-  <xi:include href="spellbooks/illaun.xml"/>
-  <xi:include href="spellbooks/cerddor.xml"/>
-  <xi:include href="spellbooks/tybied.xml"/>
+<eressea>
+<spells>
 
   <!-- shared spells -->
   <spell name="create_roi" ship="true" rank="5" index="130">
@@ -616,3 +610,5 @@
   </spell>
 
 </spells>
+</eressea>
+
diff --git a/src/jsonconf.c b/src/jsonconf.c
index 56ff2e675..2fff42b83 100644
--- a/src/jsonconf.c
+++ b/src/jsonconf.c
@@ -887,24 +887,45 @@ static void json_races(cJSON *json) {
 
 const char * json_relpath;
 
-static const char * uri_to_file(const char * uri, char *name, size_t size) {
-    const char *pos, *path = json_relpath;
+/* TODO: much more configurable authority-to-file lookup */
+static const char * authority_to_path(const char *authority, char *name, size_t size) {
+    /* source and destination cannot share the same buffer */
+    assert(authority < name || authority > name + size);
 
-    pos = strstr(uri, "://");
+    return join_path(json_relpath, authority, name, size);
+}
+
+static const char * uri_to_file(const char * uri, char *name, size_t size) {
+    const char *pos, *scheme, *path = uri;
+
+    /* source and destination cannot share the same buffer */
+    assert(uri < name || uri > name + size);
+
+    /* identify scheme */
+    scheme = uri;
+    pos = strstr(scheme, "://");
     if (pos) {
-        size_t slen = pos - uri;
-        /* identify scheme */
-        if (strncmp(uri, "config", slen) == 0) {
-            path = path_join(path, "conf", name, size);
+        size_t slen = pos - scheme;
+        if (strncmp(scheme, "config", slen) == 0) {
+            const char *authority = pos + 3;
+            /* authority */
+            pos = strstr(authority, "/");
+            if (pos) {
+                char buffer[16];
+                size_t alen = pos - authority;
+                assert(alen < sizeof(buffer));
+                memcpy(buffer, authority, alen);
+                buffer[alen] = 0;
+
+                path = authority_to_path(buffer, name, size);
+                path = path_join(path, pos + 1, name, size);
+            }
         }
-        else if (strncmp(uri, "rules", slen) == 0) {
-            path = path_join(path, "res", name, size);
-        }
-        if (path) {
-            return path_join(path, pos + 3, name, size);
+        else {
+            log_fatal("unknown URI scheme: %s", uri);
         }
     }
-    return uri;
+    return path;
 }
 
 static void include_json(const char *uri) {