title: how to use colspan in VF pages
body: <p>i have a VF page code </p>
  
  <pre><code>            &lt;apex:pageBlockSection collapsible="false"  columns="2" &gt;
  
                  &lt;apex:inputField value="{!Opp.field1__c}"/&gt; 
                  &lt;apex:inputField value="{!Opp.field2__c}"/&gt; 
                  &lt;apex:outputField value="{!Opp.field3__c}"/&gt;    
                  &lt;apex:outputField value="{!Opp.field4__c}"/&gt;    
          &lt;/apex:pageBlockSection&gt;
  </code></pre>
  
  <p>I want to have a command button inside the blockSection. Can we have something like a colspan on table to merge the first line to a single column to hold the command button?</p>
  
  <p>Thanks
  Prady</p>