Field Value Place is the important one. It tells PURE where to read and write this
field’s value, so the property detail and edit pages can render it without per-field code.
Listings Column — a real column on listings. Fastest, searchable.
IDX — inside the raw MLS payload raw->idx. Read-only from the feed.
Meta Table — a row in listing_meta. Flexible, the default for long-tail fields.
Computed only — derived from a formula, never stored.
Field Name must match the source key exactly — it is what the
reader looks up in the column, IDX payload or meta table.