I would guess that the author simply tacitly assumed that any reader would have the general look of 88x31 buttons etched in their visual memory.

This vagueness and assumed context seems so common nowadays… you’re supposed to be in the know already and it’s gauche to ask…

The first paragraph of the article links to the buttons.

> Some examples of sites sharing some thematic elements spanning over 25 years:

> (…)

> They all feature 88x31 buttons in some capacity and those buttons reflect the website and it's designer in some way.

I disagree, they all feature _multiple_ elements and it's only obvious what the 88x31 button is if you already know.