diff --git a/README.md b/README.md
index cbc92c2e..47292b3b 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,25 @@
 
 ![Screenshot of map inspector](./screenshot.png "Map inspector with Surreal loaded")
 
+## Usage
+
+👉 **[Open the app!](https://exogen.github.io/t2-mapper/)**
+
+### Camera Controls
+
+Click inside the map preview area to capture the mouse.
+
+| Key | Action |
+|-----|--------|
+| <kbd>W</kbd> | Forward |
+| <kbd>A</kbd> | Left |
+| <kbd>S</kbd> | Backward |
+| <kbd>D</kbd> | Right |
+| <kbd>Space</kbd> | Up |
+| <kbd>Shift</kbd> | Down |
+| <kbd>Esc</kbd> | Release mouse |
+
+
 ## Development
 
 Install dependencies:
diff --git a/scripts/convert-dif.ts b/scripts/convert-dif.ts
index f115216c..bf161f7e 100644
--- a/scripts/convert-dif.ts
+++ b/scripts/convert-dif.ts
@@ -1,7 +1,9 @@
 import fs from "node:fs/promises";
 import { execFileSync } from "node:child_process";
 
-const blender = `/Applications/Blender.app/Contents/MacOS/Blender`;
+const BLENDER_PATH =
+  process.env.BLENDER_PATH ||
+  `/Applications/Blender.app/Contents/MacOS/Blender`;
 
 /**
  * Find all .dif files in `public/base` and convert them to glTF.
@@ -10,7 +12,7 @@ async function run() {
   for await (const inFile of fs.glob("public/base/**/*.dif")) {
     const outFile = inFile.replace(/\.dif$/i, ".gltf");
     execFileSync(
-      blender,
+      BLENDER_PATH,
       [
         "--background",
         "--python",
diff --git a/scripts/convert-dts.ts b/scripts/convert-dts.ts
index b9901784..8f2d405c 100644
--- a/scripts/convert-dts.ts
+++ b/scripts/convert-dts.ts
@@ -1,7 +1,9 @@
 import fs from "node:fs/promises";
 import { execFileSync } from "node:child_process";
 
-const blender = `/Applications/Blender.app/Contents/MacOS/Blender`;
+const BLENDER_PATH =
+  process.env.BLENDER_PATH ||
+  `/Applications/Blender.app/Contents/MacOS/Blender`;
 
 /**
  * Find all .dts files in `public/base` and convert them to glTF.
@@ -10,7 +12,7 @@ async function run() {
   for await (const inFile of fs.glob("public/base/**/*.dts")) {
     const outFile = inFile.replace(/\.dts$/i, ".gltf");
     execFileSync(
-      blender,
+      BLENDER_PATH,
       [
         "--background",
         "--python",