OmniFocus custom URL Schema?
 

I've just started tinkering with iPhone Development and was wondering if there is an OmniFocus "custom URL Schema" that can be used to add to, modify or sync the omnifocus db or open omnifocus under a specific project/context/perspective. I remember a while ago seeing a link on the forums here which when loaded in safari on the iPhone had a link which mailed the omnifocus db to the mighty support ninjas. Are there other "urls" which app developers could use to interact with omnifocus?

Thanks,
Matt