In preparing the Charleston Buddhist Fellowship edition of this manual, the original has been thoroughly reworked.  New material has been incorporated from various sources, including the Visuddhimagga (Bhikkhu Ñāṇamoli’s translation), the translations from the scriptures given in the original have been compared against more modern translations and have been changed accordingly, the English has been reworded where necessary to improve clarity, new footnotes have been added, and Pāḷi terms have been reviewed and corrected where required.  Thus, the current edition is virtually a new work.