CLS

Clear the screen.

Syntax
      CLS

If CLS is redirected to file, console or executed through FOR /F it will print a line feed character (ASCII 10).

Errorlevels

If the screen is successfully cleared %ERRORLEVEL% = unchanged, typically this will be 0 but if a previous command set an errorlevel, that will be preserved (this is a bug).

If a bad switch is given = %ERRORLEVEL% = 1

Example

Echo Hello
CLS
Echo You didnt see that

CLS is an internal command.

“Let me be clear: America wants a strong, peaceful, and prosperous Russia” ~ Barack Obama

Related:

ECHO - Display message on screen.
Powershell: Clear-Host - Clear the screen.