Registry: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Notepad

The values of fPasteOriginalEOL and fWindowsOnlyEOL specify the handling of EOL characters when pasting text or pressing enter.

The default values of 0 will use the currently edited document's detected EOL characters.

Setting fWindowsOnlyEOL to 1 will insert a CR/LF when pressing enter.

Setting fPasteOriginalEOL to 1 will insert the EOL characters as found in the clipboard.

notepad.exe