提交 e0306900 编写于 作者: E ester.zhou

update doc

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>
上级 08c285b0
# Common Event and Notification
## Overview
## Introduction
OpenHarmony provides a Common Event Service (CES) for applications to subscribe to, publish, and unsubscribe from common events.
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