---
id: EXPO-16
family: GR-EXPO
level: extended
profiles: [storage-api, editor-client]
posture: normative-target
added: "1.0"
changed: "1.0"
source: https://flowdrop.io/spec/rules/gr-expo/expo-16
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# EXPO-16 — Seeding a port's default-exposure decision

*GR-EXPO (Part I) · level: extended · profiles: storage-api, editor-client · added in 1.0*

A suggestion fills a decision nobody has made yet, and only for a port that is actually there.

## The rule

> **Normative.** This is the rule.
>
> 1. Where an authoring surface presents a port's default-exposure decision, a value already stored for that port decides it.
>
> 2. Where none is stored, the processor's suggestion (EXPO-6) is applied only to a port the node type declares — an input it declares connectable, an output it declares exposed — and a port the node type does not declare is presented as not exposed by default.
>
> 3. Exposure values are never recorded for a port the node type does not declare.

## Related rules

- Names: EXPO-6, EXPO-8

---

Rule identifiers are permanent and are never renumbered. This specification carries
no implementation status: each implementation publishes its own standing against
these rules. Licensed CC BY 4.0.