http://www.cebas.com/wikka/wikka.php?wakka=PositionBornOperator#hn_Position_Born_Operator

Position Born is an operator that conditionally creates particles at a specific position in space.

While the Position Born operator creates particles on its own without needing any input data streams, like most other operators in thinkingParticle , it can be controlled in a rule-based manner. Be aware that the ON input data stream can be connected (through another collection of operators and conditions) and through its connection it can create some advanced and amazing effects. Make sure to read the description about the Pistol Shot option of this operator to see what can be achieved.

ポジション指定ができる一般的なパーティクル発生源。
たくさんの入力がある。
発生タイプのPistolShotはデータストリームのONが”true”になったときに数字の分だけパーティクルが生まれる。１にしておくと1個生まれる。