diff --git a/container/types.proto b/container/types.proto
index 02ec6f1..2de3713 100644
--- a/container/types.proto
+++ b/container/types.proto
@@ -33,9 +33,16 @@ message Container {
   //
   // There are some "well-known" attributes affecting system behaviour:
   //
-  // * Subnet \
+  // * __NEOFS__SUBNET \
   //   String ID of container's storage subnet. Container can be attached to
   //   only one subnet.
+  //
+  // And some well-known attributes used by applications only:
+  //
+  // * Name \
+  //   Human-friendly name
+  // * Timestamp \
+  //   User-defined local time of container creation in Unix Timestamp format
   message Attribute {
     // Attribute name key
     string key = 1 [json_name = "key"];
diff --git a/object/types.proto b/object/types.proto
index 6f0be21..d0ed2fd 100644
--- a/object/types.proto
+++ b/object/types.proto
@@ -87,8 +87,19 @@ message Header {
   // There are some "well-known" attributes starting with `__NEOFS__` prefix
   // that affect system behaviour:
   //
-  // * __NEOFS__UPLOAD_ID
-  // * __NEOFS__EXPIRATION_EPOCH
+  // * __NEOFS__UPLOAD_ID \
+  //   Marks smaller parts of a split bigger object
+  // * __NEOFS__EXPIRATION_EPOCH \
+  //   Tells GC to delete object after that epoch
+  //
+  // And some well-known attributes used by applications only:
+  //
+  // * Name \
+  //   Human-friendly name
+  // * FileName \
+  //   File name to be associated with the object on saving
+  // * Timestamp \
+  //   User-defined local time of object creation in Unix Timestamp format
   //
   // For detailed description of each well-known attribute please see the
   // corresponding section in NeoFS Technical specification.