[O] Documentation for NOBLOCKING property?

[James Harkins]

Just now, I needed to exempt a couple of subtrees from TODO dependency 
blocking. I found that you can do this by setting a subtree property NOBLOCKING.

This option appears to be undocumented (by which I mean, it isn't mentioned in 
the manual's dependency checking page, and a web search for "orgmode todo 
noblocking" turned up pages about TODOs but none with any obvious reference to 
noblocking). I found the property by grepping the .el sources for "blocked" to 
find the org-todo function, and then scanning the function until I found 
something that looked like property access.

Was it intentional to omit this from the documentation?

hjh