minor edit

README.md

 # debugfs-webgui
-Speed up the Linux kernel dynamic debug
+Simplify up the Linux kernel dynamic debug
 
 ## target system requirements
 * webserver + php
@@ -10,3 +10,15 @@ Speed up the Linux kernel dynamic debug
 
 ## user manual
 * http://\<target-ip\>/\<webserver-path-to-degufs.html\>/debugfs.html
+
+## behind the scenes
+
+1. On page load debugfs.php restores the global config (if found) from disk or creates a new one from the /sys/kernel/debug/dynamic_debug/control.
+
+2. Current global config is stored and changed in tmpfs (/tmp/debugfs.json)
+
+3. Permanent global config is stored in the same folder as the debugfs.php.
+
+4. jquery.ajax.queue.js plugin is used to send ajax requests sequentlially to deal with a simultaneous access to the config file.
+
+5. 
\ No newline at end of file