docs - rename to status codes; complete page

docs/apm/status-codes.html

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+    <title>Status codes - MontaukOS</title>
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+<li><a href="index.html">Application Programming Manual</a></li>
+<li><a href="status-codes.html" class="current">Status codes</a></li>
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+<div class="center">
+<h1>Status codes</h1>
+</div>
+
+<hr>
+
+<p>The following table is a reference to the numerical status codes returned by the MontaukOS system and applications.</p>
+
+<table>
+<colgroup>
+    <col style="width: 8em">
+    <col>
+</colgroup>
+<thead>
+<tr><th>Code</th><th>Text</th><th>Explanation</th></tr>
+</thead>
+<tbody>
+<tr><td>0</td><td>Success</td><td></td></tr>
+<tr><td>(-)1</td><td>Generic failure</td><td></td></tr>
+<tr><td>(-)2</td><td>Permission denied</td><td></td></tr>
+<tr><td>(-)3</td><td>Capability denied</td><td></td></tr>
+<tr><td>(-)4</td><td>System integrity error</td><td>The path is protected by the system and can't be modified.</td></tr>
+<tr><td>(-)5</td><td>Bad pointer</td><td></td></tr>
+<tr><td>(-)6</td><td>Invalid argument</td><td></td></tr>
+<tr><td>(-)7</td><td>Unsupported operation</td><td></td></tr>
+<tr><td>(-)8</td><td>No device</td><td></td></tr>
+<tr><td>(-)9</td><td>I/O failure</td><td></td></tr>
+<tr><td>(-)10</td><td>Bad invocation</td><td></td></tr>
+<tr><td>(-)11</td><td>No such path</td><td></td></tr>
+<tr><td>(-)12</td><td>Busy</td><td></td></tr>
+<tr><td>(-)13</td><td>Buffer too small</td><td>The buffer supplied by the caller is too small.</td></tr>
+<tr><td>(-)14</td><td>Out of memory</td><td></td></tr>
+</tbody>
+</table>
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