I assume <summary> was not explicitly mentioned because it generally only appears as a child of <details>. It's not intended to be used in the same way as say;

I assume <summary> was not explicitly mentioned because it generally only appears as a child of <details>. It's not intended to be used in the same way as say; <article> to my knowledge > A <summary> element may only be used as the first child of a <details> element https://developer.mozilla.org/en-US/docs/Web/HTML/Element/summary https://developer.mozilla.org/en-US/docs/Web/HTML/Element/su...