Append "all of the following are true" to each of the "if and only if"s in 4.1.1.x

4.1.1.2 Null Ref
Change heading to "SML Null ..." so it is consistent w/other text in that section

4.1.1.2 Null Ref paragraph starting "A null reference is an explicit declaration of intent ..." 
change "NOT a hint" to "not a hint" (this text is explanatory, the next sentence contains the normative validity constraint so the 2119 caps are only needed there).

4.1.1.2 Null Ref 
change
"...not to search the reference for reference scheme information items."
to
"...not to attempt to recognize any reference schemes in it."

4.1.1.2 Null Ref
Move paragraph starting "A null reference is an explicit declaration of intent 
..." to 4.1.2.3 Null Refs (i.e. move it under 4.1.2 Ref Semantics... it is semantics not syntax).

4.1.1.3 Unresolved     Reference change to 
4.1.1.3 Unresolved SML Reference

4.1.1.3 Unresolved Reference
from "is an SML unresolved reference if and only if"
to   "is an unresolved SML reference if and only if"

4.1.1.3 Unresolved Reference
from "recognized           schemes resolves"
to   "recognized reference schemes resolves"