Sorry for the delay in responding. I'm never quite sure how to answer these types of questions as I am not a part of the NLS program. However, I can tell you that the heading should be centered on a 40 cell line (leaving at least 3 spaces on either side of the heading). This item IS one of the items up for discussion in our errata process (which has started) for BF. Not to change it, but to clarify it.