* '''SELENIUM_HOST''' - The host running the remote Selenium server or hub. The default is '''selenium-hub1.qa.scl3.mozilla.com'''.
* '''WEBQA_TIMEOUT''' - Timeout (in seconds) used by WebDriver for its own operations (page loads, etc). The default is '''60'''.
= Known Issues =
* [https://issues.jenkins-ci.org/browse/JENKINS-28175 JENKINS-28175] - Config change deadlock Jenkins when pircx.shutdown() is invoked
= Troubleshooting =