diff --git a/macro.inc.php b/macro.inc.php
index ee18476..2877651 100644
--- a/macro.inc.php
+++ b/macro.inc.php
@@ -160,7 +160,7 @@ function macro_SELF_CONF_ID($jsm)
   $proto_id = 0;
   $alias = "";
   if(!\taskman\config_get_header($file, $proto_id, $alias))
-    $proto_id = \taskman\config_get_id($file);
+    throw new Exception("No valid header for config: $file");
   return $proto_id;
 }
 
@@ -188,7 +188,15 @@ function macro_BOOL($jsm, $expr)
  */
 function macro_IS_DEV($jsm)
 {
-  return taskman_propor("GAME_IS_DEV", 0);
+  return \taskman\getor("GAME_IS_DEV", 0);
+}
+
+/**
+ * @global
+ */
+function macro_PROP($jsm, $expr)
+{
+  return \taskman\get($expr);
 }
 
 /**
@@ -207,3 +215,49 @@ function macro_ITEM($proc, $proto_id, $amount)
   return array('proto_id' => $proto_id, 'amount' => $amount);
 }
 
+/**
+ * @global @raw_args
+ */
+function macro_UNWRAP($jsm, $content)
+{
+  $content = trim($content);
+  $content = ltrim($content, '{');
+  $content = rtrim($content, '}');
+  return $content;
+}
+
+function _array_merge_recursive_distinct(array $array1, array $array2)
+{
+  $merged = $array1;
+
+  foreach($array2 as $key => $value)
+  {
+    if(is_array($value) && isset($merged[$key]) && is_array($merged[$key]))
+      $merged[$key] = _array_merge_recursive_distinct($merged[$key], $value);
+    else
+      $merged[$key] = $value;
+  }
+
+  return $merged;
+}
+
+/**
+ * @global @raw_args
+ */
+function macro_OVERRIDE($jsm, $content)
+{
+  $items = \jzon_parse($content);
+  if(!is_array($items))
+    throw new Exception("OVERRIDE contents not an array");
+  if(sizeof($items) != 2)
+    throw new Exception("OVERRIDE array size is not 2, it's " . sizeof($items));
+
+  $merged = _array_merge_recursive_distinct($items[0], $items[1]);
+
+  $json = json_encode($merged, JSON_UNESCAPED_LINE_TERMINATORS | JSON_UNESCAPED_SLASHES);
+  $json = ltrim($json, '{');
+  $json = rtrim($json, '}');
+
+  return $json;
+}
+