--- doc/docbase/instrument_scripts/nksp/reference/01_nksp_reference.html	2017/06/27 23:40:50	3295
+++ doc/docbase/instrument_scripts/nksp/reference/01_nksp_reference.html	2017/06/28 10:48:30	3297
@@ -40,6 +40,10 @@
         <td>Creates new execution instances (threads).</td>
       </tr>
       <tr>
+        <td><code>callback_status()</code></td>
+        <td>Returns the current status of a callback (thread).</td>
+      </tr>
+      <tr>
         <td><code lang="nksp">dec()</code></td>
         <td>Decrements the passed integer variable by one.</td>
       </tr>
@@ -279,6 +283,22 @@
         <th>Variable</th> <th>Description</th>
       </tr>
       <tr>
+        <td><code>$CALLBACK_STATUS_QUEUE</code></td>
+        <td>Built-in constant reflecting the status of a callback to be
+            alive but suspended. See <code>callback_status()</code> for details.</td>
+      </tr>
+      <tr>
+        <td><code>$CALLBACK_STATUS_RUNNING</code></td>
+        <td>Built-in constant reflecting the status of a callback to be
+            alive and currently executing. See <code>callback_status()</code>
+            for details.</td>
+      </tr>
+      <tr>
+        <td><code>$CALLBACK_STATUS_TERMINATED</code></td>
+        <td>Built-in constant reflecting the status of a callback to be
+            not alive. See <code>callback_status()</code> for details.</td>
+      </tr>
+      <tr>
         <td><code>$KSP_TIMER</code></td>
         <td>Preserved for compatiblity reasons with KSP, returns the same value
            as <code>$NKSP_REAL_TIMER</code> (refer to the latter for details).