Setting the default font and size for everything in the TextMaker app

[BobyT]

Hello Softmaker community,
How (and where) do you set the default font and size in the TextMaker 2024 app?
I only know how to do it when you start a new file (which is the default font and size every time),
but it doesn't work when you open an "old" (already written) file.
And feel free to show it with screenshots in your reply.
And I use a translation program (from German to English).
And I use Windows 11 24H2 64Bit,
and I have administrator access to my computer (e.g.
to change something in the registry).
As I said in advance, "Thank you very much for your reply."

[Woody44]

The default font attributes only apply to new documents. Why would you want to change the formatting of an existing document when you open it? Most people are more concerned with making certain that the format of an existing document does NOT change when it is opened.

[SuperTech]

For instructions, please refer to the section titled 'Changing the default character formatting' in our user manual. Please note that this change will only affect new documents.