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url: /api/formats/css/src/variables/BOUNDARY_ATTR.md
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[pantoken-root](../../../../index.md) / [formats/css/src](../index.md) / BOUNDARY\_ATTR

# Variable: BOUNDARY\_ATTR

> `const` **BOUNDARY\_ATTR**: `"data-pantoken-boundary"` = `"data-pantoken-boundary"`

Beta

Attribute marking a scope that ancestor resolution must not cross.