Regulus, A Rectification Manual: The American Presidency
Definition
Regulus, A Rectification Manual: The American Presidency is an astrological source represented here through cited material on primary directions, latitude, predictive hierarchy, solar return, and transits.

What this work covers
The cited material covers primary directions, latitude, predictive hierarchy, solar return, and transits.
Because an Arabic Part commonly contains the Ascendant in its formula, the manual treats repeated comparison between solar-return aspects and a natal Part's degree as an iterative rectification test: changing the candidate Ascendant changes the Part and therefore the comparison.
For building a rectification event database, the manual prioritizes biographies rich in exact dates, relatively nonpartisan in tone, and grounded in private papers or official documents; memoirs may supply dates but require bias checks, while campaign biographies are rejected as a general evidence base.
Directing through the Bounds moves selected significators by primary motion through Egyptian bounds: the Ascendant uses oblique ascension, the Midheaven right ascension, and other significators an interplanetary-direction method whose historical variants remain disputed; the active bound ruler is then emphasized before the solar return.
Scope and limitations
This overview is limited to the cited portions. It does not stand in for the complete work, reproduce source passages, or make every documented technique a universal chart interpretation.