What are container, row, col in SMACSS methodology?

Question

css

Good afternoon!
I am mastering SMACSS, everything is generally clear, but there are small questions. For example, already standard classes - wrapper, row, container, col - what are they according to SMACSS? Module or layout? Everything is clear with wrapper - this is layout, rename it to l-wrapper and forget it. But col, for example, is applied all the time - that is, if it is a layout, it turns out that the entire page will be covered by a similar class, and the layout is usually unique in the SMACSS specification, and this case is not mentioned. If col is a module, then how can this be semantically linked to the purpose of modules? In the specification, a module is a separate element, for example, a product in an IM, but not an area where products can be. Again, col has modifications - like col-6... it seems like SMACSS doesn't take things like that into account. How to do it right and without departing from the methodology?

Answer 1

if you use preprocessors, then these classes are not needed at all, use mixins