Beancount: Income:PreviousEventRevenue

Date	F	Narration/Payee	Position	Cost	Change	Balance
2019-08-30		Open Income:PreviousEventRevenue
2019-10-21	*	之前活動盈餘款項			-22303.0 TWD	-22303.0 TWD
		Assets:Bank:Cathy:TWD	22303.0 TWD	22303.0 TWD
		Income:PreviousEventRevenue	-22303.0 TWD	-22303.0 TWD