diff --git a/api.lua b/api.lua
index 74cbbda..dc4aef9 100644
--- a/api.lua
+++ b/api.lua
@@ -1,7 +1,7 @@
 
 --- World Data Manager API
 --
---  @module api.lua
+--  @topic api
 
 
 -- store formatted world path
diff --git a/docs/reference/index.html b/docs/reference/index.html
index 534cb88..bcca54b 100644
--- a/docs/reference/index.html
+++ b/docs/reference/index.html
@@ -28,159 +28,32 @@
 
 
 
-<h2>Contents</h2>
-<ul>
-<li><a href="#Functions">Functions</a></li>
-<li><a href="#Tables">Tables</a></li>
-</ul>
 
 
-<h2>Modules</h2>
-<ul class="nowrap">
-  <li><strong>api.lua</strong></li>
+<h2>Topics</h2>
+<ul class="">
+  <li><a href="topics/api.html">api</a></li>
 </ul>
 
 </div>
 
 <div id="content">
 
-<h1>Module <code>api.lua</code></h1>
-<p>World Data Manager API</p>
-<p>
-
-</p>
 
 
-<h2><a href="#Functions">Functions</a></h2>
-<table class="function_list">
+<h2>Topics</h2>
+<table class="module_list">
 	<tr>
-	<td class="name" nowrap><a href="#wdata.read">wdata.read (fname)</a></td>
-	<td class="summary">Reads config file from world directory.</td>
-	</tr>
-	<tr>
-	<td class="name" nowrap><a href="#wdata.write">wdata.write (fname, data[, flags])</a></td>
-	<td class="summary">Writes to config file in world directory.</td>
+		<td class="name"  nowrap><a href="topics/api.html">api</a></td>
+		<td class="summary">World Data Manager API</td>
 	</tr>
 </table>
-<h2><a href="#Tables">Tables</a></h2>
-<table class="function_list">
-	<tr>
-	<td class="name" nowrap><a href="#FlagsDef">FlagsDef</a></td>
-	<td class="summary">Flags definition.</td>
-	</tr>
-</table>
-
-<br/>
-<br/>
-
-
-    <h2 class="section-header "><a name="Functions"></a>Functions</h2>
-
-    <dl class="function">
-    <dt>
-    <a name = "wdata.read"></a>
-    <strong>wdata.read (fname)</strong>
-    </dt>
-    <dd>
-    Reads config file from world directory.
-
-
-    <h3>Parameters:</h3>
-    <ul>
-        <li><span class="parameter">fname</span>
-            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.4">string</a></span>
-         Base filename with optional directory structure (e.g. "my_mod/my_config")
-        </li>
-    </ul>
-
-    <h3>Returns:</h3>
-    <ol>
-
-           <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.6">table</a></span>
-        Table with contents read from json file or <code>nil</code>.
-    </ol>
-
-
-
-
-</dd>
-    <dt>
-    <a name = "wdata.write"></a>
-    <strong>wdata.write (fname, data[, flags])</strong>
-    </dt>
-    <dd>
-    Writes to config file in world directory.
-
-
-    <h3>Parameters:</h3>
-    <ul>
-        <li><span class="parameter">fname</span>
-            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.4">string</a></span>
-         Base filename with optional directory structure (e.g. "my_mod/my_config").
-        </li>
-        <li><span class="parameter">data</span>
-            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.6">table</a></span>
-         Table data to be written to config file.
-        </li>
-        <li><span class="parameter">flags</span>
-            <span class="types"><a class="type" href="index.html#FlagsDef">FlagsDef</a></span>
-
-
-
-         (<em>optional</em>)
-        </li>
-    </ul>
-
-    <h3>Returns:</h3>
-    <ol>
-
-           <span class="types"><span class="type">bool</span></span>
-        <code>true</code> if succeeded, <code>false</code> if not.
-    </ol>
-
-
-
-
-</dd>
-</dl>
-    <h2 class="section-header "><a name="Tables"></a>Tables</h2>
-
-    <dl class="function">
-    <dt>
-    <a name = "FlagsDef"></a>
-    <strong>FlagsDef</strong>
-    </dt>
-    <dd>
-    Flags definition.
-
-
-    <h3>Fields:</h3>
-    <ul>
-        <li><span class="parameter">styled</span>
-            <span class="types"><span class="type">bool</span></span>
-         Outputs in a human-readable format if this is set (default: <code>true</code>).
-         (<em>optional</em>)
-        </li>
-        <li><span class="parameter">null_to_table</span>
-            <span class="types"><span class="type">bool</span></span>
-         "null" values will be converted to tables in output (default: <code>false</code>).
-         (<em>optional</em>)
-        </li>
-    </ul>
-
-
-
-
-
-</dd>
-</dl>
-
 
 </div> <!-- id="content" -->
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/AntumDeluge/LDoc/tree/custom">LDoc 1.4.6-antum-dev</a></i>
-<i style="float:right;">Last updated 2021-08-28 19:42:56 </i>
+<i style="float:right;">Last updated 2021-08-28 19:45:59 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/reference/topics/api.html b/docs/reference/topics/api.html
new file mode 100644
index 0000000..d5e43d4
--- /dev/null
+++ b/docs/reference/topics/api.html
@@ -0,0 +1,190 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+<head>
+    <title>World Data Manager</title>
+    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
+</head>
+<body>
+
+<div id="container">
+
+<div id="product">
+	<div id="product_logo"></div>
+	<div id="product_name"><big><b></b></big></div>
+	<div id="product_description"></div>
+</div> <!-- id="product" -->
+
+
+<div id="main">
+
+
+<!-- Menu -->
+
+<div id="navigation">
+<br/>
+<h1>wdata</h1>
+
+
+<ul>
+  <li><a href="../index.html">Index</a></li>
+</ul>
+
+<h2>Contents</h2>
+<ul>
+<li><a href="#Functions">Functions</a></li>
+<li><a href="#Tables">Tables</a></li>
+</ul>
+
+
+<h2>Topics</h2>
+<ul class="">
+  <li><strong>api</strong></li>
+</ul>
+
+</div>
+
+<div id="content">
+
+<h1>Topic <code>api</code></h1>
+<p>World Data Manager API</p>
+<p>
+
+</p>
+
+
+<h2><a href="#Functions">Functions</a></h2>
+<table class="function_list">
+	<tr>
+	<td class="name" nowrap><a href="#wdata.read">wdata.read (fname)</a></td>
+	<td class="summary">Reads config file from world directory.</td>
+	</tr>
+	<tr>
+	<td class="name" nowrap><a href="#wdata.write">wdata.write (fname, data[, flags])</a></td>
+	<td class="summary">Writes to config file in world directory.</td>
+	</tr>
+</table>
+<h2><a href="#Tables">Tables</a></h2>
+<table class="function_list">
+	<tr>
+	<td class="name" nowrap><a href="#FlagsDef">FlagsDef</a></td>
+	<td class="summary">Flags definition.</td>
+	</tr>
+</table>
+
+<br/>
+<br/>
+
+
+    <h2 class="section-header "><a name="Functions"></a>Functions</h2>
+
+    <dl class="function">
+    <dt>
+    <a name = "wdata.read"></a>
+    <strong>wdata.read (fname)</strong>
+    </dt>
+    <dd>
+    Reads config file from world directory.
+
+
+    <h3>Parameters:</h3>
+    <ul>
+        <li><span class="parameter">fname</span>
+            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.4">string</a></span>
+         Base filename with optional directory structure (e.g. "my_mod/my_config")
+        </li>
+    </ul>
+
+    <h3>Returns:</h3>
+    <ol>
+
+           <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.6">table</a></span>
+        Table with contents read from json file or <code>nil</code>.
+    </ol>
+
+
+
+
+</dd>
+    <dt>
+    <a name = "wdata.write"></a>
+    <strong>wdata.write (fname, data[, flags])</strong>
+    </dt>
+    <dd>
+    Writes to config file in world directory.
+
+
+    <h3>Parameters:</h3>
+    <ul>
+        <li><span class="parameter">fname</span>
+            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.4">string</a></span>
+         Base filename with optional directory structure (e.g. "my_mod/my_config").
+        </li>
+        <li><span class="parameter">data</span>
+            <span class="types"><a class="type" href="https://www.lua.org/manual/5.3/manual.html#6.6">table</a></span>
+         Table data to be written to config file.
+        </li>
+        <li><span class="parameter">flags</span>
+            <span class="types"><a class="type" href="../topics/api.html#FlagsDef">FlagsDef</a></span>
+
+
+
+         (<em>optional</em>)
+        </li>
+    </ul>
+
+    <h3>Returns:</h3>
+    <ol>
+
+           <span class="types"><span class="type">bool</span></span>
+        <code>true</code> if succeeded, <code>false</code> if not.
+    </ol>
+
+
+
+
+</dd>
+</dl>
+    <h2 class="section-header "><a name="Tables"></a>Tables</h2>
+
+    <dl class="function">
+    <dt>
+    <a name = "FlagsDef"></a>
+    <strong>FlagsDef</strong>
+    </dt>
+    <dd>
+    Flags definition.
+
+
+    <h3>Fields:</h3>
+    <ul>
+        <li><span class="parameter">styled</span>
+            <span class="types"><span class="type">bool</span></span>
+         Outputs in a human-readable format if this is set (default: <code>true</code>).
+         (<em>optional</em>)
+        </li>
+        <li><span class="parameter">null_to_table</span>
+            <span class="types"><span class="type">bool</span></span>
+         "null" values will be converted to tables in output (default: <code>false</code>).
+         (<em>optional</em>)
+        </li>
+    </ul>
+
+
+
+
+
+</dd>
+</dl>
+
+
+</div> <!-- id="content" -->
+</div> <!-- id="main" -->
+<div id="about">
+<i>generated by <a href="http://github.com/AntumDeluge/LDoc/tree/custom">LDoc 1.4.6-antum-dev</a></i>
+<i style="float:right;">Last updated 2021-08-28 19:45:59 </i>
+</div> <!-- id="about" -->
+</div> <!-- id="container" -->
+</body>
+</html>