diff --git a/README.md b/README.md
index b9090c5..e80cba0 100644
--- a/README.md
+++ b/README.md
@@ -31,4 +31,15 @@ The easiest way to install is using [Package Control](https://packagecontrol.io)
 2. Type `Switch: Window` and hit <kbd>enter</kbd>
 
 or hit <kbd>ctrl+k</kbd>, <kbd>ctrl+tab</kbd> in sequence
-to show the `Switch Window` Quick Panel directly.
\ No newline at end of file
+to show the `Switch Window` Quick Panel directly.
+
+## Kind Info
+
+The kind of a window is displayed via icon.
+
+| icon | description
+|:----:|:---
+| P    | A project/workspace is opened in the window
+| F    | One or more folders are opened in the window. The best matching one according to the active file is displayed in description line.
+| f    | A file is displayed in active view of a window, which has no project or folder open.
+| S    | An unsaved view is displayed in active view of a window, which has no project or folder open.
\ No newline at end of file
diff --git a/preview.png b/preview.png
index 32ade8b..c98b5e1 100644
Binary files a/preview.png and b/preview.png differ
diff --git a/switch_window.py b/switch_window.py
index 4179fdb..1696abb 100644
--- a/switch_window.py
+++ b/switch_window.py
@@ -16,7 +16,9 @@ def list_items(self):
         items = []
 
         kind_project = [sublime.KIND_ID_NAMESPACE, "P", "Project"]
-        kind_file = [sublime.KIND_ID_NAVIGATION, "F", "File"]
+        kind_folder = [sublime.KIND_ID_NAMESPACE, "F", "Folder"]
+        kind_file = [sublime.KIND_ID_NAVIGATION, "f", "File"]
+        kind_scratch = [sublime.KIND_ID_AMBIGUOUS, "S", "Scratch"]
 
         active_window = sublime.active_window()
         for window in sublime.windows():
@@ -41,10 +43,10 @@ def list_items(self):
 
             else:
                 title = active_file_name
-                kind = kind_file
 
                 folders = window.folders()
                 if folders:
+                    kind = kind_folder
                     for folder in window.folders():
                         if active_file_name.startswith(folder):
                             second_line = f"Folder: {folder}"
@@ -52,9 +54,11 @@ def list_items(self):
                     else:
                         second_line = f"Folder: {folders[0]}"
                 elif active_file_location:
+                    kind = kind_file
                     second_line = f"Location: {active_file_location}"
                 else:
-                    second_line = "Scratch"
+                    kind = kind_scratch
+                    second_line = "Scratch Window"
 
             items.append(
                 sublime.ListInputItem(