- Flow content.
- Palpable content.
- Where flow content is expected, but not within another
search
orform
element.
- Flow content, but with no
search
orform
element descendants.
- Neither tag is omissible.
- Global attributes
- form attributes
- action — URL to use for form submission
- unspecified to disable implicit form submission upon pressing ENTER.
- empty string or whitespace only to use the URL of the form's document (the URL's query part is replaced).
- Uses HTMLFormElement, as defined for form elements.
TBD: explainer + example.