How to provide local files for Ollama models to use on replies?

For individual files, apparently #Ollama allows natively from what I could find, but I couldn't understand the instructions. Is there some tutorial I may have missed that explains it in layman's terms?

I also remember someone on the threadiverse posting some tool or plugin for that too, which I'll try looking for again when I'm not busy.

And what about whole directories, would it be possible without converting everything into a single file if the folder has only/mostly TXT files or similar?

Thanks in advance, and aldo thanks for the patience with the newbie questions! "<.<

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