Portrait mode puts vertical dimensions on a document. e.
Answer:
No, think about mass surveillance in China (and in USA!), and the "social credit" system.
The answer is true. The Undo command is set up on the toolbar. You can undo up to 40 edits in your plan by clicking on the Undo button. If you want to undo all of the revises made, simply quit (close your Internet browser window or start a new plan) without saving.
Answer:
Thunderbird
Explanation:
When we talk about open source software, we are talking about software that is free to download and its source code repository is made available and public to its users. Open source code can be modified and distributed with the users’ rights if they want to. Thunderbird is an example of open source developed by the Mozilla foundation. All known web browsers like Chromium and Safari are open source apart from Internet Explorer. Internet Explorer has remained closed source for a long time now.