Accepts one parameter which is the raw HTML content to be placed in the form, above the Field's location.

Description:

Single parameter is the raw HTML content to be placed in the form above the Field's location. Unlike the [Raw] attribute, the Field's label, content, and note will NOT be ignored, and the header HTML is put into a separate form-group above the Field's form-group.

Other Field names from within the same Form may be embedded into content, in the format of {FieldName} within the content.

This is a similar attribute to [Footer], which places the Raw HTML content below the Field.

Example:

[Header] [h3]Holiday date range:[/h3] (replace the [] with <> around h3)