Change Overview

diff --git a/Sandbox.md b/Sandbox.md
--- a/Sandbox.md
+++ b/Sandbox.md
@@ -1,2 +1,12 @@
 You can play around here. _Go nuts_, or go back [[home|Main page]].
 
+# Header
+
+Wikked’s data is entirely stored in text files on disk. All you ever need, or should really care about, are those text files, and the source control repository which contains their history. Wikked may create some other files –- cache files, indices, etc. –- but they can always be safely deleted and re-created.
+
+*Inside the wiki root directory, you will find:*
+
+Page files.
+Source control files.
+Configuration files.
+Cache files.