These officials are given classes by the NHMA and have town legal counsel.
NH Atty.General
"I strongly recommend that all public officials learn their responsibilities under the Right-to-Know law. It is important for those public officials who use e-mail or who maintain government records in electronic form to carefully study the 2008 and 2009 changes to the law relating to electronic records. This Memorandum should be kept easily accessible and be referred to when you are faced with questions on the application of the law. When you are uncertain about the application of the law to a specific circumstance, state officials should consult with my Office, county officials should consult with their County Attorney, and municipal and schools officials should consult with their legal counsel. "
http://doj.nh.gov/civil/documents/right-to-know.pdf
A NH Supreme Court ruling this year also stipulates RTK request can be answered in electronic form.