Fieldset

The group's heading. Screen readers announce it with each field in the group.

An icon at the start of the heading, centered on the label and description, to tell sections apart. Decorative. Use icons on the sections or on the rows within them, not both.

A short explanation under the heading.

Space between the fields, in spacing steps. Defaults to 4.

Lays the group's fields out in up to this many columns (1 to 4), by the group's own width, as Columns does. Defaults to 1.

Draws a line between the fields, with the Gap above and below it, as in a list of settings. Each direct child is a row; use it instead of Dividers between them. Ignored when Columns is more than 1.

The fields.