133.This section sets the meanings and definitions of terms used in Part 2 of the Act. In subsection (2) it is made clear that the power of the Secretary of State to amend the rules of the Royal Mail Pension Plan (“RMPP (section 19) also applies to related documents put in place to provide financial support to the Royal Mail Pension Plan (“RMPP (a specific example being the escrow agreement put in place at the time of the March 2006 triennial valuation).