abbr!() { /* proc-macro */ }Expand description
<abbr> element.
The <abbr> HTML element represents an abbreviation or acronym.
When including an abbreviation or acronym, provide a full expansion of the term in plain text on first use, along with the <abbr> to mark up the abbreviation. This informs the user what the abbreviation or acronym means.
The optional title attribute can provide an expansion for the abbreviation or acronym when a full expansion is not present. This provides a hint to user agents on how to announce/display the content while informing all users what the abbreviation means. If present, title must contain this full description and nothing else.