diff --git a/docs/1-overview.md b/docs/1-overview.md
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 # Overview
 
+**Visualiser** is a visualiser and debugger for spatially-embedded algorithms, especially pathfinding search.
+
+![Alt text](image.png)
+
+Understanding how algorithms work can be hard. Luckily, pathfinding problems are often occur in have a spatial environment — navigating through roads, corridors, terrain etc. So, it's natural to reason about them visually. For these problems, rather than staring at `cout`/`print` logs or stepping through the code, it would make more sense to see them run in the context their respective environments.
+
+What's more, Visualiser isn't just for pathfinding search. Visualiser is designed to visualise any sort of decision-making over a 2D or 3D space.
+
+## What Can I Use Visualiser For?
+
+### Insights
+
+[TODO]
+
+### Post-hoc Analysis
+
+[TODO]
+
+### Demonstrations
+
+Creating visualisations are the best way to get your point across.
+
+## What's So Cool About Visualiser?
+
+### Declarative
+
+Rather than writing your own visualiser, declaratively visualise your pathfinding search by creating _search traces_, YAML files that describe what happened during your algorithm, and how you want them to be drawn.
+
+### Robust
+
+[TODO]
+
+### Extensible
+
+[TODO]
+
+## When Shouldn't I Use Visualiser?
+
+### Not a Replacement for a Traditional Debugger
+
+[TODO]
+
+### Not For Plotting Graphs
+
+[TODO]
+
 :::warning
 
 This site is under construction. Content may be inaccurate or missing.
 
 :::
-
-Visualiser is a visualiser for pathfinding search.
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+# Search Trace
+
+## Context
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+# Visualiser Adapter Protocol
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