System command

cls command

Clear the visible contents of the Command Prompt window.

Availability: Microsoft Learn command reference spanning Windows client and Windows Server releases; some entries are legacy, role-specific, optional-feature or interactive subcommands.中文

Documented syntax

cls

The linked Microsoft Learn article is the upstream authority. Availability may depend on Windows release, role, optional feature or interactive tool context.

Examples

Example usage for cls.

cls

Parameters, options and clauses

Option / clause	Description
`No arguments`	Clear the command window contents.
`/?`	Display command help or the supported command-line usage.

Safety note

Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.

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