caddy-frontend: Provide some guidelines for developers

software/caddy-frontend/README.caddy_frontend.rst

@@ -448,6 +448,15 @@ This allows backends to:
 Technical notes
 ===============
 
+Profile development guidelines
+------------------------------
+
+Keep the naming in instance profiles:
+
+ * ``software_parameter_dict`` for values coming from software
+ * ``instance_parameter_dict`` for **local** values generated by the instance, except ``configuration``
+ * ``slapparameter_dict`` for values coming from SlapOS Master
+
 Instantiated cluster structure
 ------------------------------