What does the `wysiwyg` option in block blueprints do?

I’m curious about what the wysiwyg option in block blueprints does? It can for example be found in the text block blueprint but changing its value doesn’t affect the panel behavior of the block.

name: field.blocks.text.name
icon: text
wysiwyg: true
preview: text
    type: writer
    nodes: false
    placeholder: field.blocks.text.placeholder

Suppresses the drawer opening by default, enabling inline editing.

Ah, right, when adding the block. Thanks!