Document navigation chrome

Definition

This is the persistent navigation UI around a document rather than editing inside the document body itself.

Examples:

• search panels
• outline panels
• TOC generation and navigation

Why this matters

If you mix this with core paragraph editing law, the spec gets muddy fast.

Search, outline, and TOC are related, but they are not the same thing:

• search is query-driven navigation
• outline is persistent heading chrome
• TOC is a document artifact or block

Current research conclusion

Typora gives strong evidence for this interaction class and helps separate:

• body editing law
• document navigation law
• app-shell behavior

Use

Use this concept when deciding whether a feature belongs in:

• editor-body law
• document navigation
• app shell