# Flow D: Reference Page
**Activates when:** User has a similar page to reference
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## Gather Reference
**Which page is this similar to?**
Provide:
- Page name or URL
- What file path (if internal project)
- Or description of reference page
Reference:
Store reference_page
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## Identify Differences
**What are the KEY DIFFERENCES from the reference?**
What changes from the reference page?
Differences:
Store differences
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## Generate Specification
If internal reference exists:
1. Copy reference specification structure
2. Update with differences
3. Mark sections that need updates
4. Preserve navigation pattern
If external reference:
1. Describe reference structure
2. Note differences
3. Create conceptual specification
4. Recommend creating sketch showing changes
Generate specification document
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## Completion