diff --git a/main.py b/main.py
index 468f8c0..066b5d1 100644
--- a/main.py
+++ b/main.py
@@ -2,6 +2,19 @@
 import subprocess
 
 def func_calls():
+    """Executes a sequence of method calls related to formats, algorithms, CLI Operations, and session redirects.
+    
+    This function does not take any parameters
+    
+    It calls following methods in sequence:
+    1. `get_format()` from formats module
+    2. `prepare_key()` from HMACAlgorithm class in algorithms module
+    3. `perform_operation()` from VerifyOperation class in cli module
+    4. `resolve_redirects()` from SessionRedirectMixin class in sessions module
+    
+    Returns: 
+        None: This function does not return a value.
+    """
     formats.get_format()
     algorithms.HMACAlgorithm.prepare_key()
     cli.VerifyOperation.perform_operation()
diff --git a/sw.js b/sw.js
index da18583..cfd4456 100644
--- a/sw.js
+++ b/sw.js
@@ -1,67 +1,82 @@
-
-if (location.href.includes('howdz.xyz')) {
-  importScripts('https://cdn.staticfile.org/workbox-sw/7.0.0/workbox-sw.js')
-  workbox.setConfig({
-    debug: false,
-  });
-  console.log('sw.js is load by CDN!')
-} else {
-  importScripts('./workbox/workbox-sw.js')
-  workbox.setConfig({
-    debug: false,
-    modulePathPrefix: './workbox/'
-  });
-  console.log('sw.js is load by local!')
-}
-
-// Cache css/js/font.
-workbox.routing.registerRoute(
-  ({ request }) => request.destination === 'style' || request.destination === 'script' || request.destination === 'font',
-  new workbox.strategies.CacheFirst({
-    cacheName: 'css-js-font',
-    plugins: [
-      new workbox.cacheableResponse.CacheableResponsePlugin({
-        statuses: [200],
-      }),
-      new workbox.expiration.ExpirationPlugin({
-        maxEntries: 50,
-        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
-      }),
-    ]
-  })
-);
-
-// Cache image.
-workbox.routing.registerRoute(
-  ({ request }) => request.destination === 'image',
-  new workbox.strategies.StaleWhileRevalidate({
-    cacheName: 'image',
-    plugins: [
-      new workbox.cacheableResponse.CacheableResponsePlugin({
-        statuses: [200],
-      }),
-      new workbox.expiration.ExpirationPlugin({
-        maxEntries: 50,
-        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
-      })
-    ]
-  })
-)
-
-// Cache video
-workbox.routing.registerRoute(
-  ({ request }) => request.destination === 'video',
-  new workbox.strategies.CacheFirst({
-    cacheName: 'video',
-    plugins: [
-      new workbox.cacheableResponse.CacheableResponsePlugin({
-        statuses: [200],
-      }),
-      new workbox.expiration.ExpirationPlugin({
-        maxEntries: 50,
-        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
-      }),
-      new workbox.rangeRequests.RangeRequestsPlugin()
-    ]
-  })
-)
+
+if (location.href.includes('howdz.xyz')) {
+  importScripts('https://cdn.staticfile.org/workbox-sw/7.0.0/workbox-sw.js')
+  workbox.setConfig({
+    debug: false,
+  });
+  console.log('sw.js is load by CDN!')
+} else {
+  importScripts('./workbox/workbox-sw.js')
+  workbox.setConfig({
+    debug: false,
+    modulePathPrefix: './workbox/'
+  });
+  console.log('sw.js is load by local!')
+}
+
+// Cache css/js/font.
+workbox.routing.registerRoute(
+  /**
+   * Checks if the request destination is either 'style', 'script' or 'font'.
+   * @param {{request: Object}}  object - An object containing a request property
+   * @returns {Boolean} True if the request destination matches 'style', 'script', or 'font'. Otherwise, returns false.
+   */
+  ({ request }) => request.destination === 'style' || request.destination === 'script' || request.destination === 'font',
+  new workbox.strategies.CacheFirst({
+    cacheName: 'css-js-font',
+    plugins: [
+      new workbox.cacheableResponse.CacheableResponsePlugin({
+        statuses: [200],
+      }),
+      new workbox.expiration.ExpirationPlugin({
+        maxEntries: 50,
+        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
+      }),
+    ]
+  })
+);
+
+// Cache image.
+workbox.routing.registerRoute(
+  /**
+   * A method checking the destination property of the request object.
+   * @param {Object}  request - An object containing request properties.
+   * @returns {Boolean} Returns true if request destination is 'image', false otherwise.
+   */
+  ({ request }) => request.destination === 'image',
+  new workbox.strategies.StaleWhileRevalidate({
+    cacheName: 'image',
+    plugins: [
+      new workbox.cacheableResponse.CacheableResponsePlugin({
+        statuses: [200],
+      }),
+      new workbox.expiration.ExpirationPlugin({
+        maxEntries: 50,
+        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
+      })
+    ]
+  })
+)
+
+// Cache video
+workbox.routing.registerRoute(
+  /**
+   * This method checks if the request's destination is a video.
+   * @param {Object}  request - The object that contains a destination property.
+   * @returns {Boolean} Returns true if the destination of the request is 'video', false otherwise.
+   */
+  ({ request }) => request.destination === 'video',
+  new workbox.strategies.CacheFirst({
+    cacheName: 'video',
+    plugins: [
+      new workbox.cacheableResponse.CacheableResponsePlugin({
+        statuses: [200],
+      }),
+      new workbox.expiration.ExpirationPlugin({
+        maxEntries: 50,
+        maxAgeSeconds: 60 * 60 * 24 * 7, // 7 Days
+      }),
+      new workbox.rangeRequests.RangeRequestsPlugin()
+    ]
+  })
+)