note: ┌─ test.html:1:17 │ 1 │ this is a tag:

test

│ ^^ ^^ end tag │ │ │ start tag · 5 │ Attribute values can be quoted: │ ^^^^ ^^^ ^^^^ ^^^^^^ attr value │ │ │ │ │ │ │ attr name │ │ attr value │ attr name 6 │ 7 │ But you cannot put attributes everywhere: │ ^^^^ end-tag-with-attributes 8 │ 9 │ Please mind the gap: < test │ ^ invalid-first-character-of-tag-name 10 │ 11 │ The pirate says &arrrrr; │ ^ unknown-named-character-reference 12 │ 13 │ Does this open two pages? click me │ ^^^^ duplicate-attribute 14 │ 15 │ Do you start or do you end? │ ^ end-tag-with-trailing-solidus