Using `n how can i add two empty line (two carriage return), between these two lines in the output file?

hi friends
using `n   how can i add two empty line (two carriage return), between these two lines in the output file?
PS C:\> $env:COMPUTERNAME | add-content c:\file.txt
PS C:\> $Env:USERDOMAIN  | add-content c:\file.txt
 i tested "$env:computername`n`n`n$env:userdomain" | add-content c:\file.txt   but it results in 
myPCMyDomain
but i wanted the contents of the output file be like this:
MyPC
#empty line here 
#empty line here
MyDomain
 i tested many other forms but didn't work.
thanks

I tried it, as well. The line breaks were respected in the PowerShell console, Programmer's Notepad, and Word; they weren't in Notepad.
You are using a Unicode file.  Locale is what?
If you just want notepad compatible line breaks then do this:
del file.txt ; "$env:computername`r`n`r`n`r`n$env:userdomain" | add-content file.txt ;notepad file.txt
Look in hex to see that `n is ^L or 0xA and is only one character.  CrLf is 0xD 0xA - two characters.
My programmers editors and VS all understand a single ^L as a line break so does PowerShell.  Only DOS/Notepad and other utilitis don't understand this..
¯\_(ツ)_/¯

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