Add comment to importedfield entry in documenttypes config definition
@@ -105,4 +105,5 @@ documenttype[].referencetype[].id int
## Numeric ID of the document type instances of the reference point to.
documenttype[].referencetype[].target_type_id int
+## Imported fields (specified outside the document block in the schema)
documenttype[].importedfield[].name string
