CoAP is a RESTful transfer protocol for constrained nodes and networks. CoAP is based on datagram transport, which limits the maximum size of resource representations that can be transferred without too much fragmentation. A previous version of this draft defined the Block option. The Block option provides a minimal way to transfer larger representations in a block-wise fashion. It is currently documented in the WG draft draft-ietf-core-block-00.txt This short I-D attempts to pick up some recent discussion on the CoRE mailing list, and defines a more general, but also slightly more complex approach. It is intended as an example for a complete design based on this discussion, to enable a rational assessment of the relative complexities.