Does Informative = Non-Normative

Within the SpecGL, Section 6 References  has the additional qualifier, 
"(non-normative)".  Although logic tells us that non-normative is the same 
as informative, is there a reason that we did not label this section 
"informative".  The reason for this question, is that we don't define 
non-normative but define informative.  Additionally, Checkpoint 13.2 
states: Distinguish normative and informative text and Checkpoint 13.4 
states: use consistent terminology.

My recommendation is obvious - replace non-normative with informative.

regards
Lynne