wrtc.adv.saveLog() saves the wrtc_kit log to a local file on user's computer.
wrtc.adv.saveLog(name, addtxt)
Nothing.
To add a "Save log" button to your webpage:
<button type="button" onclick="wrtc.adv.saveLog();">Save Log</button>
wrtc.adv.addToLog()
wrtc.saveFile()