A configuration of aspects formed by four points of a horoscope: each point is in quintile to one point, in sesqui-quintile (terdecile) to another, and in opposition to the third.

P.Globa states that the action of an Envelope is similar to a synthetic rectangle, but at another level. For the native there is a smooth transition from struggle, a choice, break to clearing. There are opportunities for searching freely, demonstrating personal initiative, and innovating. Struggle passes smoothly into freedom.