Added some structor concepts

docs/modules/utils.state_machine.html

@@ -277,7 +277,7 @@
  NOTICE: This function will invoke an error if called after init.</td>
     </tr>
     <tr>
-    <td class="name"><a href="#Module.register_transition_callback">Module.register_transition_callback(self, state, state, callback)</a></td>
+    <td class="name"><a href="#Module.register_transition_callback">Module.register_transition_callback(self, old, new, callback)</a></td>
     <td class="summary">Register a handler that will be invoked by StateMachine.transition
  You may register multiple handlers for the same transition
  NOTICE: This function will invoke an error if called after init.</td>
@@ -591,7 +591,7 @@
     <div class="divider divider-custom"></div>
     <div class="block section-item-header">
     <a href="#Module.register_transition_callback" class="fragment-hashtag">#</a>
-    <span class="section-item-title" id="Module.register_transition_callback">Module.register_transition_callback(self, state, state, callback)</span>
+    <span class="section-item-title" id="Module.register_transition_callback">Module.register_transition_callback(self, old, new, callback)</span>
     </div>
     </dt>
     <dd>
@@ -628,12 +628,12 @@
 
     <li class="section-subitem-li">
 
-    <strong><em>state</em></strong>
+    <strong><em>old</em></strong>
 
     <strong> : </strong>
 
 
-     number/string entering state
+     number/string exiting state
 
     </li>
 
@@ -643,7 +643,7 @@
 
     <li class="section-subitem-li">
 
-    <strong><em>state</em></strong>
+    <strong><em>new</em></strong>
 
     <strong> : </strong>
 
@@ -753,7 +753,7 @@
     <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc </a></i>
     </div>
     <div class="content-footer column col-9 col-sm-12">
-    <i>Last updated 2019-09-06 21:12:05 UTC</i>
+    <i>Last updated 2019-09-17 21:04:13 UTC</i>
     </div>
     </div>
     </div>