Fix UG

docs/html/userhtmlse2.html

@@ -361,7 +361,7 @@ class="description">
 src="userhtml0x.png" alt="psb_version_string_
 " class="math-display" ></div>
 <!--l. 295--><p class="nopar" > whose current value is <span class="obeylines-h"><span class="verb"><span 
-class="cmtt-10">3.8.0</span></span></span>
+class="cmtt-10">3.9.0</span></span></span>
 <!--l. 298--><p class="noindent" >
    <h4 class="subsectionHead"><span class="titlemark">2.3    </span> <a 
  id="x4-60002.3"></a>Application structure</h4>

docs/src/intro.tex

@@ -293,7 +293,7 @@ are classified as:
 To finish our general description, we define a version string with the
 constant 
 \[ \verb|psb_version_string_|\]
-whose current value is \verb|3.8.0|
+whose current value is \verb|3.9.0|
 
 \subsection{Application structure}
 \label{sec:appstruct}