[inigyou]

It means the word "the" as part of instructions and the word "the" as part of data would be two different tokens

[danlitt]

But tokens are just text! Isn't it all just text? If you're training and you encounter "the", is that an instruction "the" or a data "the"?

[inigyou]

If it occurs in the text box for instructions you encode it as an instruction "the" and if it occurs in the text box for data you encode it as a data "the"

[tekne]

Exactly!

Think of how an image of a car and a car in front of you may look indistinguishable in 2D -- but due to your 3D vision you know they're not the same thing (but also know the image is of a car, while not literally being a car).

Likewise, blue tokens are the image of red tokens.