What is the use of -Append in PowerShell's Tee-Object command?

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The -Append parameter in PowerShell's Tee-Object command is used to append the output of a command to an existing file instead of overwriting the file. By default, Tee-Object overwrites the output file every time it is run. However, with the use of the -Append parameter, you can add additional data to the same file without losing the previous data.