Frankly, without a positive marker your training isn’t going to go far at all. It’s how you, the handler, let your dog know it’s doing whatever you are trying to teach it right.
To you, the human, a positive marker is simply your praise word. It’s very important in dog training. And in our human world as well. How else would we know we are doing something right?
Here’s a few examples, with which you are probably familiar:
It doesn’t matter what language you use for your marker, just be consistent, because when you aren't using clear verbalization, dogs get confused and you, the human, get frustrated.
Dogs can learn in any language and some often learn two in a bilingual household.
And if you’ve done your homework, that word or combination of words (the simpler, the better!) will have really high value, which will encourage Phydo to repeat that behavior you just marked, when he is part of the same scenario.
Of course, the more you repeat your marker appropriately and in the right timing, the faster your dog will learn that behavior. Yes, it’s all about repetition, repetition, repetition. Proper, high value praise can go such a long way.