Add or remove ids on one of a creature's multi-link fields

Name of the element.

Any kind of details about the element.

The top level category to which the element belongs.

The sub level category through which the element is further classified.

URL to an image representing the element.

Visual description of the creature.

Typical behaviors, instincts, or recurring actions the creature tends to display.

The emotional tone or attitude the creature conveys through posture, expression, or aggression.

Current situation or classification of the creature.

Approximate or exact weight of the creature, in the world's mass unit (World mass_unit).

Approximate height of the creature, in the world's length unit (World length_unit).

The time of the creature's birth, recorded in the world's defined TIME unit.

Difficulty or threat level of the creature in a gameplay context.

Total health or durability value in combat.

Defense rating against physical attacks or effects.

Typical movement speed, in the world's distance unit (World distance_unit) per round.

Specific location where the creature is currently found or most associated with. A Location's id.

Larger area or region commonly inhabited or currently claimed by the creature. A Zone's id.

The world change sequence at this element's last write.

The world membership that created this element, or null when the world's owner did.

The world membership that last changed this element, or null when the world's owner (or the server) did, or no write has touched it since doors were recorded.

The door of the last change: seat (an agent seat), mcp (the MCP server), declared (the request sent an X-OW-Agent header), api, v1, sync (the mobile app's sync) or server (the server, on its own behalf). The first three mean an agent made it. Null: no write since doors were recorded.

Present, and true, only on an element this reader knows of but does not see whole: a guest or player reaches it only because its own Character's sheet links to it (one step out). Such a row keeps id, type, name, description, supertype, subtype, image_url, created_at, updated_at and change_seq; every other field reads as unset (text "", numbers and single links null, multi links [], created_by, changed_by and changed_via null, no extension fields), its files are 404, and search matches only its name and description. Absent: the element is whole. Any other grant (it names the reader's Character, the reader knows it, it is on the roster, the reader made it) makes it whole; a hidden element is never even a stub.