The extension macros allow you to automate login, implement Hide-When-like functionality, display result sets automatically, create custom result sets, and so on.

扩展宏让您可以自动进行登录，实现类似何时隐藏的功能，自动显示结果集，创建客户结果集等等。

youdao

Shelter. Refers to things or local shelter. Deceived; hide. Extension for the shield. Overshadowed over.

遮蔽。指遮蔽之物或地方。蒙蔽；隐瞒。引申为袒护。盖过，超过。

youdao

The hole means that an attacker can hide malicious code on a webpage or an e-mail containing files with the wmf extension.

BBC: Hand on computer mouse