Documenting the * wild card character in Short Answer Questions.

lang/en/help/lesson/questiontypes.html

@@ -54,7 +54,16 @@
     </p>
 
 <p>By default the comparisons ignore the case of the text. There is an option 
-    to make the comparisons case sensitive.</p></li>
+to make the comparisons case sensitive.</p>
+
+<p>The asterix (*) character can be used in answers as a &quot;wild card&quot; 
+    character. It stands for any number of characters (including no charcters 
+    at all). For example, the answer &quot;Long*&quot; will match 
+    &quot;longer&quot;, &quot;longest&quot; and &quot;long&quot;. If one of 
+    the answers is just &quot;*&quot; (a single *) this anwser will match 
+    anything, it is normally used as the last &quot;catch-all&quot; answer. 
+    (If an asterix (*) is actually needed in an answer, it should be entered as 
+    \*, backslash asterix)<p></li>
 
 <li><b>True/False</b> The answer to this type of question only has two options,
     true or false. The student is prompted to choose which is the correct