More comments to clear my confused brain

js/auth.js

@@ -1,5 +1,12 @@
-const cmd = document.getElementById("cmd")
-init();
+/*
+Auth process: User Requests Key => Server emails key to user =>
+              user opens link on auth.html =>
+              website POSTs key to server => Server checks validity =>
+              Server responds with the users auth key =>
+              auth.js adds this to localStorage
+*/
+const cmd = document.getElementById("cmd") // Assign element to const
+init(); // Run init function
 
 async function sendHome(){
     await delay(2000);
@@ -11,9 +18,9 @@ async function cmdOut(message) {
     cmd.insertAdjacentHTML("beforeend", html)
 }
 
-async function registerKey(key) {
+async function registerKey(key) { // Posts key to server and listens for response.
     var url = `${window.location.origin}/api/v1/auth/register`;
-    let res = await fetch(url, {
+    let res = await fetch(url, { // The response will contain the UUID which will be registered
         method: "POST",
         headers: {
           "Content-Type": "application/json"
@@ -28,7 +35,7 @@ async function registerKey(key) {
     }
 }
 
-async function init(){
+async function init(){ // Reads registration key from query, and calls registerKey(key)
   cmdOut("Reading registration key");
   const key = await getQuery("key");
   cmdOut(`Key: ${key}`)