diff --git a/docs/dcc-tables.md b/docs/dcc-tables.md
index 874ff19..bb4f8c6 100644
--- a/docs/dcc-tables.md
+++ b/docs/dcc-tables.md
@@ -88,7 +88,7 @@ SAS Developer Notes:
 
 ### POST_EDIT_HOOK
 
-[Hook script](#hook-scripts) to execute _after_ an edit has been made. Useful when there is a need to augment data, or perform advanced data quality checks prior to approval.
+[Hook script](#hook-scripts) to execute _after_ an edit has been made. Useful when there is a need to augment data (derived / calculated columns), or perform advanced data quality checks prior to approval.
 
 Leave blank if not required.
 
@@ -112,7 +112,7 @@ This [hook script](#hook-scripts) will execute twice during a typical workflow -
 
 This makes it a helpful place to prevent changes being made, eg in situations where the target table needs to be locked by alternative systems.
 
-It can also be used to apply display formats, or to prepare any 'system' columns such as "APPROVER_NM".
+It can also be used to apply display formats, or to prepare any derived 'system' columns such as "LAST_APPROVER_NM".
 
 Leave blank if not required.