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Mac User Guide
- Welcome
- What’s new in macOS Sequoia
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- Get started with Apple Intelligence
- Use Writing Tools
- Use Apple Intelligence in Mail
- Use Apple Intelligence in Messages
- Use Apple Intelligence with Siri
- Get webpage summaries
- Summarize an audio recording
- Create original images with Image Playground
- Use Apple Intelligence in Photos
- Summarize notifications and reduce interruptions
- Use ChatGPT with Apple Intelligence
- Apple Intelligence and privacy
- Block access to Apple Intelligence features
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- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos, and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books, and more between devices
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- Control what you share
- Set up your Mac to be secure
- Allow apps to see the location of your Mac
- Use Private Browsing
- Keep your data safe
- Understand passwords
- Change weak or compromised passwords
- Keep your Apple Account secure
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Lock a document on Mac
To protect documents from being accidentally changed or deleted, you can lock them. When a document is locked, you receive a warning when you move it to the Trash. When you empty the Trash, the locked document is deleted.
On your Mac, do one of the following:
Lock a closed document: Select it in a Finder window or on the desktop, choose File > Get Info, click
next to General, then select Locked.Lock an open document: Hold the pointer to the right of the document title in the toolbar, click
, then select Locked.
To unlock a document, deselect Locked.
To protect folders and disks, change permissions for them.
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