I am new at most of this. But as it was explained to me the grey areas represent those items changed from the previous revision.

John Perry may want to add some comments on this.

Greg Munie
IPC Director of Design Programs

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bill Noel
Sent: Wednesday, July 10, 2013 8:29 AM
To: Technet
Subject: [TN] Highlighted Text in Standards

Hello all - Where in our collection of IPC Standards does it define what is intended by the highlighted text (much of the text has a grayed background behind it) in many of the newer standards?  I'm assuming this is to indicate a change from previous revisions but I cannot confirm where it states this.  Thanks in advance.