What you're seeing is the various folder types found within the vSphere Inventory, you most likely were browsing at a the Datacenter MoRef as described here in the vSphere API reference document - http://www.vmware.com/support/developer/vc-sdk/visdk41pubs/ApiReference/vim.Datacenter.html
d = datacenterFolder
h = hostFolder
n = networkFolder
s = datastoreFolder
v = vmFolder
Yes these are accessible via the vSphere API as referenced above and to get a better understanding of the inventory, take a look at this blog post which goes into more detail - http://www.doublecloud.org/2010/03/vsphere-inventory-structure-deep-dive/
Thanks for the description of what each name maps to!
I'm still trying to figure out the second part of my question, how do I programatically figure out what type of Folder it is? According to a thread in the vijava forums, looking at childType might be enough to figure it out:
http://sourceforge.net/projects/vijava/forums/forum/826592/topic/406103
Thanks!
Mike