watermark

Configures a watermark drawn behind every physical page's body content. Useful for "DRAFT" / "CONFIDENTIAL" stamps, brand marks, or background lattices that should appear under each page regardless of content overflow.

The block runs against a BoxScope so children can be anchored to any of the nine com.conamobile.pdfkmp.layout.BoxAlignment positions. The watermark spans the entire page (not the content frame) so corner-anchored marks land flush with the page edge.

Calling watermark more than once replaces the previous content.