<screeninfo>Serial planning</screeninfo>
<mediaobject>
<imageobject>
- <imagedata fileref="images/serialssamples/keatsplanning"/>
+ <imagedata fileref="images/serialssamples/keatsplanning.png"/>
</imageobject>
</mediaobject>
</screenshot><screenshot>
<screeninfo>Advanced pattern</screeninfo>
<mediaobject>
<imageobject>
- <imagedata fileref="images/serialssamples/keatsadvanced"/>
+ <imagedata fileref="images/serialssamples/keatsadvanced.png"/>
</imageobject>
</mediaobject>
</screenshot><screenshot>
<screeninfo>Subscription info</screeninfo>
<mediaobject>
<imageobject>
- <imagedata fileref="images/serialssamples/keatsnumber"/>
+ <imagedata fileref="images/serialssamples/keatsnumber.png"/>
</imageobject>
</mediaobject>
</screenshot></para>