diff --git a/README.mkd b/README.mkd
--- a/README.mkd
+++ b/README.mkd
@@ -11,7 +11,7 @@
 
 Use the arrow keys or move the mouse to the edges to scroll around on the map. The plus and minus keys zoom in and out. 0 toggles pause. F opens the Forest Policy. B opens the budget.
 
-## Overlap with past work ##
+## Relationship to past work ##
 
 This game is a total rewrite of the original version in C#. I honestly like the original language and library more (Clojure and Quil), but Quil was starting to struggle with the amount of drawing, and I was hitting the limit of my optimization abilities and available information online. (Another drawback: I'm also giving up the browser version, unless people get XNA in the browser working.)
 
@@ -67,7 +67,7 @@
 │   ├── *DllMap.cs* (vendored)
 │   ├── *DrawVertDeclaration.cs*
 │   ├── **Engines** Engines 
-│   ├── *FilledRectangle.cs* Helper class for drawing a rectangle.
+│   ├── *FilledRectangle.cs* Class for drawing a filled rectangle.
 │   ├── *FNAGame.cs* Primary game class.
 │   ├── **fnalibs** Compiled native libraries.
 │   │   ├── **lib64**