AMRD Reference Manual: AMRD (adaptive mesh refinement driver) is a library consisting of a single function, amrd(), which implements a Berger and Oliger (B&O) style adaptive mesh refinement (AMR) driver, with modifications to allow one to solve elliptic equations within the B&O time stepping framework, as outlined in [1]. A standard, adaptive, full approximation storage (FAS) multigrid (MG) algorithm is thus also provided. The user specifies the particular partial differential equations (PDEs) to solve via a set of “hook” functions that are called by AMRD at appropriate times. AMRD is built on top of PAMR, and so is parallel ready. AMRD is still very much under development, as is this document.