diff --git a/bsip-0040.md b/bsip-0040.md
index c88d77e..edb1f6f 100644
--- a/bsip-0040.md
+++ b/bsip-0040.md
@@ -47,24 +47,24 @@ All descriptions in this section are on a pseudo/prosa level and no recommendati
 
 ### Custom active permission and custom active authority
 
-A `custom_active_permission` looks like follows (in JSON for clarification, backend serializes and stores in a different way):
+A `custom_active_permission` looks like follows (in JSON/pseudo for clarification):
 ```
 custom_active_permission = list of custom_active_authority items
 custom_active_authority = {
-    valid_from, // this custom active authority is valid starting at this timestamp, defaults to now
-    valid_to,   // this custom active authority is valid until this timestamp, defaults to 1 year
-    operationid,
-    authority,
-    asserts
+    valid_from,    // timestamp when this is active, defaults to now
+    valid_to,      // timestamp when this is invalid, defaults to 1 month
+    operationid,   // operationid of the target operation,
+    authority,     // same as for the existing authortities (multisig with weighted accounts or keys),
+    asserts        // see below
 }
 ```
-Note: This assumes `custom_active_permission` is stored within `account_object`. Actual implementation details left to the implementer.
+Note: This assumes `custom_active_permission` is stored within `account_object`. Actual implementation details left to the implementer, as long as every `custom_active_permission` can be assigned to exactly one account.
 
 ### Asserts
 
 The `asserts` is a list of `assert_objects` that are all together evaluated with `and` logic to evaluate a match
 ```
-asserts = list of assert_object
+asserts = list of assert_objects
 assert_object = {
     argument, // target argument of the operationid
     function, // functionid to do the assert