diff --git a/README.mkd b/README.mkd
--- a/README.mkd
+++ b/README.mkd
@@ -3,9 +3,9 @@
 # isometric-park-fna
 
 
-As the director of a small state park, your job is to balance conservation, leisure, and fiscal sustainability. At the moment, there's minimal gameplay.
+As the director of a small state park, your job is to balance conservation, leisure, and fiscal sustainability. Gameplay is still being added.
 
-This is inspired by Maxis' Sim series of games, particularly SimSafari, and Chris Sawyer's Tycoon games. Its Premise more closely resembles SimPark, but I never played it except for a demo. (Alternatively, watch [1990's Sim Games. SO GOOD!]())
+This is inspired by Maxis' Sim series of games, particularly SimSafari, and Chris Sawyer's Tycoon games. Its premise more closely resembles SimPark, but I never played it except for a demo. (Alternatively, watch [1990's Sim Games. SO GOOD!]())
 
 ## Controls ##
 
@@ -29,6 +29,86 @@
 
 You can build and run the project using VSCode actions.
 
+### File Structure ###
+
+```
+.
+├── *encompass-cs* ECS library (vendored)
+├── **FNA** Graphics and media library
+├── **ImGui.NET** GUI library
+├── **isometric-park-fna**
+│   ├── **bin**
+│   │   ├── **Debug** Debug version
+│   │   └── **Release** Release version
+│   ├── *Camera.cs* 
+│   ├── *CellMap.cs* 
+│   ├── **Components** Components that store data on entities.
+│   ├── **Content**
+│   │   ├── **DejaVuSerif-BoldItalic.ttf**
+│   │   ├── **DejaVuSerif-Bold.ttf**
+│   │   ├── **DroidSans.ttf**
+│   │   ├── **grammar.json**
+│   │   ├── **images** images
+│   │   ├── **iosevka-medium.ttf**
+│   │   ├── **iosevka-term-extendedmediumitalic.ttf**
+│   │   ├── **iosevka-term-extendedmedium.ttf**
+│   │   ├── **iosevka-term-medium.ttf**
+│   │   ├── **news_items_pregenerated.yaml**
+│   │   ├── **news_items.yaml**
+│   │   ├── **part4_tileset_alt.png**
+│   │   ├── **part4_tileset.png**
+│   │   ├── **part4_tileset.xcf**
+│   │   ├── **photos_converted3.png**
+│   │   ├── **photos_converted.png**
+│   │   ├── **solid_tileset.png**
+│   │   └── **typicons.ttf**
+│   ├── *DllMap.cs* (vendored)
+│   ├── *DrawVertDeclaration.cs*
+│   ├── **Engines** Engines 
+│   ├── *FilledRectangle.cs* Helper class for drawing a rectangle.
+│   ├── *FNAGame.cs* Primary game class.
+│   ├── **fnalibs** Compiled native libraries.
+│   │   ├── **lib64** 
+│   │   ├── **osx**
+│   │   ├── **x64**
+│   │   └── **x86**
+│   ├── *ImageMap.cs* Map of images.
+│   ├── *ImGuiRenderer.cs* Renderer backend for ImGui. (vendored)
+│   ├── **isometric-park-fna-core.csproj**
+│   ├── *isometric-park-fna-core.sln*
+│   ├── **isometric-park-fna.csproj**
+│   ├── *Line.cs* Class for drawing a line.
+│   ├── *Logging.cs* Logging class.
+│   ├── **Messages** Message classes.
+│   ├── *Quad.cs* Draw a quadrilateral.
+│   ├── **Renderers** Renderer classes.
+│   │   ├── *AreaRenderer.cs*  Renders areas on the map.
+│   │   ├── *BudgetWindowRenderer.cs* Renders the budget window.
+│   │   └── *ImGuiWindowRenderer.cs* Renders ImGUI windows.
+│   ├── *Simulation.cs* Primary simulation class.
+│   ├── **Sources.md** List of sources.
+│   ├── *Tile.cs* Draws tiles.
+│   ├── **UI** User interface code,, one for each window.
+│   │   ├── *StyleSet.cs* Utility class for setting multiple style variables and colors at once.
+│   │   ├── .
+│   │   ├── .
+│   │   └── .
+│   └── **Utils**
+│       ├── *Extensions.cs* Extension methods.
+│       ├── *MathUtils.cs* Math utility mentions.
+│       └── *Node.cs* Simple tree.
+├── *isometric-park-fna-core.sln* .NET Core solution.
+├── *isometric-park-fna.sln* .NET Framework solution.
+├── **README_future.mkd**
+├── **README.mkd**
+├── **scripts** Helper scripts.
+│   └── *package.py* Creates packaages.
+├── **SpriteFontPlus ** Font library. (Vendored)
+└── **TODO.taskpaper** Tasks, feature requests, and bugs.
+```
+
+
+
 ## Acknowledgements ##
 
 Art: [Isometric 64x64 Outside Tileset by Yar](https://opengameart.org/content/isometric-64x64-outside-tileset), various images from the Library of Congress and USDA Forest Service
@@ -37,7 +117,7 @@
 
 Sources for the procedural generation are documented in Sources.md. 
 
-Watching Thin Matrix's [video devlogs](https://www.youtube.com/watch?v=90CZ7Q17sls&list=PLRIWtICgwaX1gcSZ8qj8Q473tz7PsNmpR) for Equilinox inspired me to press on. :) Despite some similarities, the design of this game wasn't really inspired by Equilinox. (I've also enjoyed Thoughtquake's [video devlogs](https://www.youtube.com/user/Thoughtquake/videos) for Cargo Defense and Cliff Harris's Democracy 4 [video devlogs](https://www.youtube.com/user/cliffski2/videos))  
+Watching Thin Matrix's [video devlogs](https://www.youtube.com/watch?v=90CZ7Q17sls&list=PLRIWtICgwaX1gcSZ8qj8Q473tz7PsNmpR) for Equilinox inspired me to press on. :) Despite some similarities, the design of this game wasn't really inspired by Equilinox. (I've also enjoyed Thoughtquake's [video devlogs](https://www.youtube.com/user/Thoughtquake/videos) for Cargo Defense and Cliff Harris' Democracy 4 [video devlogs](https://www.youtube.com/user/cliffski2/videos))  
 
 The original versions used art from the [Low Poly Forest Pack](https://devilsworkshop.itch.io/lowpoly-forest-pack) by [Devil's Work.Shop](https://devilsworkshop.itch.io/). (I had converted the models into isometric 2D images, using [this process.](https://www.youtube.com/watch?v=bk0PXMgZgQg))