Added Legend to prior-versions.md

prior-versions.md

@@ -3,6 +3,21 @@
 <details>
   <summary>Windows v0.1.0</summary>
 
+### Legend
+- **root-directory-name** >> description of directory
+    - **dir-with-explanation** >> description of directory
+        > Explanation
+    - **symlink-source** >> description of directory
+        > symlinked to "path/to/where/symlink/is/sent"
+    - **symlink-dest** >> description of directory
+        > symlink of "path/to/where/symlink/is/from"
+        > Further explanation
+    - **some-dir** >> description of directory
+        - ${PLACE_HOLDER_FOR_SUBDIRS}
+        - ./file-name >> description of file
+
+<br>
+  
 ### Windows Structure for v0.1.0
 - **Documents** >> default Documents directory
 	- **!Source of Truth** >> second brain root directory