LFUN
  string * RemoveId (string id)
  string * RemoveId (string * id)

DESCRIPTION
  Remove one or more id strings from this object's P_IDS.

  Argument:
    id: a single string, or an array of strings to remove.

  Result: P_IDS' new content.

EXAMPLE
  RemoveId ("sword");
  RemoveId (({"longsword", "elvensword"}));

IMPLEMENTED
  /std/thing/description