# Feature Extension without Modification

> The ability to add new behavior by writing new code rather than editing existing, tested code.

Record: `lexicon:feature-extension-without-modification`
Kind: capability
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-feature-extension-without-modification

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Consumer-Specific Contracts](https://banes-lab.com/records/lexicon/consumer-specific-contracts.md) and before [Contract Preservation](https://banes-lab.com/records/lexicon/contract-preservation.md).

## Category

- [SOLID / Object-Oriented Design](https://banes-lab.com/records/lexicon-category/solid-object-oriented-design.md)

## Enabled by

- [Open/Closed Principle](https://banes-lab.com/records/architecture/open-closed.md)

## Linked from

- [SOLID / Object-Oriented Design](https://banes-lab.com/ontology/principles/architecture-category-solid-object-oriented-design.md)