# Part of a Larger System
**Trait Number:** 14
**Layer:** Functional
**Bit Position:** 6 (bit 14 overall)
**Binary Encoding:** `00000000 00000100 00000000 00000000`
**UHT Code (self-encoding):** `00 04 00 00`
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# Icon
![[Icon14.png|200]]
## Definition
The entity is **not standalone**. It is functionally or structurally integrated into a broader system, depending on or contributing to the operation of other components.
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## When to Apply
Use this trait when the entity:
- **Relies on external systems** to operate fully
- Is **modular**, embedded, or otherwise meant to exist **within a whole**
- Is **defined by its role within a composite structure**
Avoid applying if the entity:
- Is **functionally independent** or isolated
- Is a **complete, self-contained system** (though its subsystems might still qualify)
- Exists without **referencing or contributing to** a larger mechanism
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## Related Traits
- [[Autonomous in function]] — Contrast: autonomy suggests self-sufficiency, while this trait suggests interdependence.
- [[System-critical]] — Systems may contain critical parts, but not all parts are critical.
- [[Hierarchical / Modular]] — Often overlaps when structural relationships exist.
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## Examples
- A gear inside a transmission
- A microservice in a distributed system
- A battery module inside an EV
- A line of code in a program
- A single paragraph in a legal document
- A control board in a smart appliance
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## Commentary
This trait reflects **functional dependency** and **system composition**. It marks entities that exist **in relation to something bigger**, and whose role, behavior, or existence depends on context.
It is crucial in system-of-systems modeling, modular architecture, and MBSE decomposition. It helps identify **integration points**, **interfacing modules**, and **non-standalone components**.
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**© 2025 Steven Holland. All rights reserved.**
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