NEW ISSUE: Presence of NACK and ACK range in the same message

Title: Presence of NACK and ACK range in the same message

Description:

Page 15, lines 344-345 say:
"This element MUST NOT be present if <wsrm:Nack> is also present as a 
child of <wsrm:SequenceAcknowledgement>."

Given that there can be multiple SeqAck headers in a message, this is 
true only for the same header and not across headers.

Justification:

WSRM allows multiple SeqAck headers, therefore one can Nack sequence "A" 
in one header and Ack Sequence "B" in another header in the same message.

Target: core

Type: editorial

Proposal:
Replace the sentence in question with "... MUST NOT be present if a 
sibling <wsrm:Nack> element is also present ..."

Related issues: none


[1] 
http://www.oasis-open.org/apps/org/workgroup/ws-rx/download.php/14548/wsrm-1.1-spec-wd-03.pdf