diff --git a/command-center/command-center.lua b/command-center/command-center.lua
index b54aad8..532cb60 100644
--- a/command-center/command-center.lua
+++ b/command-center/command-center.lua
@@ -1,5 +1,19 @@
+--[[
+    Central Command Center for AE, Power, and other Monitoring.
+
+    Sections:
+    - AE Monitoring
+        - Key items
+        - Quantum links
+        - Stock levels
+        - Energy Levels
+    - Power Monitoring
+        - Control energy generation
+]]
+
 
 local monitorMainRight = peripheral.wrap("monitor_16")
 local monitorMainLeft = peripheral.wrap("monitor_17")
 local monitorTopRight = peripheral.wrap("monitor_19")
-local monitorTopLeft = peripheral.wrap("monitor_18")
\ No newline at end of file
+local monitorTopLeft = peripheral.wrap("monitor_18")
+
diff --git a/elevator/going-up.pcm b/elevator/going-up.pcm
new file mode 100644
index 0000000..398e968
Binary files /dev/null and b/elevator/going-up.pcm differ
diff --git a/pcmToLua.d b/pcmToLua.d
index 628af94..8f66a65 100755
--- a/pcmToLua.d
+++ b/pcmToLua.d
@@ -1,12 +1,15 @@
 #!/usr/bin/env rdmd
 /**
- * Converts a signed 8-bit PCM audio file into a Lua table list.
+ * Converts a signed 8-bit PCM audio file into a Lua table list. Run this from
+ * the command-line via `./pcmToLua my-pcm-file.pcm`.
  */
 module pcm_to_lua;
 
 import std.stdio;
 import std.file;
 
+const frameSize = 128 * 1024;
+
 int main(string[] args) {
     if (args.length < 2) {
         stderr.writeln("Missing required file.");
@@ -19,9 +22,11 @@ int main(string[] args) {
     }
 
     byte[] contents = cast(byte[]) std.file.read(audioFilename);
+    ulong sampleIndex = 0;
     stdout.writeln("local audio = {");
     foreach (byte sample; contents) {
         stdout.writefln!"    %d,"(sample);
+        sampleIndex++;
     }
     stdout.writeln("}");