As is well known in the field of Septuagint studies, certain books developed over time into distinct textual forms. That is, in some cases there are what look like two different Greek versions of the same book in the Septuagint corpus. In such cases, the manuscript evidence preserves two textual traditions that are substantially different enough that Rahlfs decided to differentiate them in his edition of the Septuagint.* Since we decided to use Rahlfs-Hanhart as a base text, when it came to producing the Reader’s Edition we had to ask ourselves how we would handle these “double texts,” as they are often called.