AFFiNE-Mirror/blocksuite/docs-site/components/blocks/surface-block.md

Surface Block

This is a container used to render graphical content.

• In documents opened with the edgeless editor, this block is required.
• Its elements field can contain a large number of CanvasElements. These elements use HTML5 canvas for rendering and can be interleaved with note blocks, with automatically flattening to use the fewest canvas contexts.

Reference

• SurfaceBlockSchema
• SurfaceBlockService