Encoding can be utf8, unicode, utf32.
User can choose to omit '-Encoding' to default to 'unicode'.
'ascii' encoding corrupts the following file:
https://www.w3.org/2001/06/utf-8-test/UTF-8-demo.html
Inspect 'foo.txt' with the following code after downloading the file.
Get-Content -Encoding UTF8 UTF-8-demo.html | Out-File -Encoding ascii foo.txt