This document is under consideration in an RG for becoming an IRTF document. A document in this state does not imply any RG consensus and does not imply any precedence or selection. It's simply a way to indicate that somebody has asked for a document to be considered for adoption by an RG.
Active RG Document
This document has been adopted by the RG and is being actively developed.
Parked RG Document
This document has lost its author or editor, is waiting for another document to be written, or cannot currently be worked on by the RG for some other reason.
In RG Last Call
The document is in its final review in the RG.
Waiting for Document Shepherd
IRTF documents have document shepherds who help RG documents through the process after the RG has finished with the document.
Waiting for IRTF Chair
The IRTF Chair is meant to be performing some task such as sending a request for IESG Review.
Awaiting IRSG Reviews
The document shepherd has taken the document to the IRSG and solicited reviews from one or more IRSG members.
In IRSG Poll
The IRSG is taking a poll on whether or not the document is ready to be published.
In IESG Review
The IRSG has asked the IESG to do a review of the document, as described in RFC5742.
Sent to the RFC Editor
The RG processing of this document is complete and it has been sent to the RFC Editor for publication. The document may be in the RFC Editor's queue, or it may have been published as an RFC; this state doesn't distinguish between different states occurring after the document has left the RG.
The document has been published as an RFC.
Document on Hold Based On IESG Request
The IESG has requested that the document be held pending further review, as specified in RFC 5742, and the IRTF has agreed to such a hold.
Dead IRTF Document
This document was an active IRTF document, but for some reason it is no longer being pursued for the IRTF stream. It is possible that the document might be revived later, possibly in another stream.