diff --git a/main.swift b/main.swift
index d905f4a..bcdc99a 100755
--- a/main.swift
+++ b/main.swift
@@ -6,18 +6,19 @@
 
 import Cocoa
 
+// Function to spawn a child process that can be used to update 
 @discardableResult
 func shell(_ args: [String]) -> Int32 {
-    let task = Process()
+    let task = Process() // The new child process
     let isDark = UserDefaults.standard.string(forKey: "AppleInterfaceStyle") == "Dark"
-    var env = ProcessInfo.processInfo.environment
-    env["DARKMODE"] = isDark ? "1" : "0"
-    task.environment = env
+    var env = ProcessInfo.processInfo.environment // Get the current processes environment variables
+    env["DARKMODE"] = isDark ? "1" : "0" // Append the DARKMODE environment variable to env
+    task.environment = env // Set the child processes environment variables to the current processes environment variables plus DARKMODE
     task.launchPath = "/usr/bin/env"
     task.arguments = args
     task.standardError = FileHandle.standardError
     task.standardOutput = FileHandle.standardOutput
-    task.launch()
+    task.launch() // Spawn the child process with the new environment variables
     task.waitUntilExit()
     return task.terminationStatus
 }
@@ -25,13 +26,15 @@ func shell(_ args: [String]) -> Int32 {
 let args = Array(CommandLine.arguments.suffix(from: 1))
 shell(args)
 
+// Add an observer for dark mode or light mode being set
 DistributedNotificationCenter.default.addObserver(
     forName: Notification.Name("AppleInterfaceThemeChangedNotification"),
     object: nil,
     queue: nil) { (notification) in
-        shell(args)
+    shell(args)
 }
 
+// Add an observer to check whether dark/light mode has been updated since the device last went to sleep
 NSWorkspace.shared.notificationCenter.addObserver(
     forName: NSWorkspace.didWakeNotification,
     object: nil,