Selenium IDE Flow Control

https://addons.mozilla.org/en-us/firefox/addon/flow-control/

Example:

<tr>
    <td>storeTextPresent</td>
    <td>Continue</td>
    <td>tp</td>
</tr>

<tr>
    <td>gotoIf</td>
    <td>!${tp}</td>
    <td>Common</td>
</tr>

...

<tr>
    <td>label</td>
    <td>Common</td>
    <td></td>
</tr>
...