expression
that's
Used in Japanese as a casual, often emphatic way to say 'that's', typically in set phrases like ザッツ・オール (that's all) or ザッツ・ライト (that's right). Not a general-purpose substitute for それは.
「ザッツ・オール」と言って、彼は話を終えた。
He said 'that's all' and finished speaking.