This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Electional astrology's practice of assigning an everyday activity to a governing planet and house has a documented history reaching back, like the comparable practice of assigning family relationships, to Hellenistic astrology, and Chris Brennan's survey traces how the broader Hellenistic system of planetary significations, a planet's rulership extended from a birth chart's own topics to the timing of a specific undertaking, provided the theoretical basis later electional writers such as Bonatti drew on and expanded centuries afterward.
That documented history matters for how an entry is written, because the specific planet or house assigned to an activity is not an independent medieval invention but traces to an older, documented set of planetary significations, and Brennan's survey records where a later medieval electional writer's own list of activities and their significators preserves that earlier Hellenistic logic and where it introduces its own later refinement.
An entry draws on this documented history for the origin of the electional significator system generally, keeping it distinct from any one later handbook's own specific working list of activities, which applies the inherited logic to a particular author's own period and practice.