# substitute-header

References attribute 3 of attribute-defining items and
describes the substitute-header for that attribute of the ADI. This
can affect the column width if it is longer than the column-width
ADI.

**Synonyms:** sub.header, shd

## See also

- [Defining attributes](https://d3codex.com/attributedefiningitem/defining-attributes/)

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Source: https://d3codex.com/attributedefiningitem/substitute-header/ - part of the D3Codex reference.