diff --git a/storage/hybrid/PML.txt b/storage/hybrid/PML.txt
index 7fd64c5..1568404 100644
--- a/storage/hybrid/PML.txt
+++ b/storage/hybrid/PML.txt
@@ -9,19 +9,20 @@ This is PML format:
 [SID] is session ID
 
 [DATA]
-0: -
-1: -
+0: - no data
+1: - no data
 2: new session ID
 3: (key)|(val) - create and update DATA or (key) only for delete key
-key && val in format: [length (int64)][gob data bytes with this length]
-
 
 PML log file:
 ______________________________________________________   LOG stream...
-OP | SID | DATA                                       |   |
+OP | SID | DATA | LENGTH  |                           |   |
 ------------------------------------------------------    |
--- // -- // -- // --                                      |
+----- // -- // -- // --   |                           |   |
 ------------------------------------------------------    |
-   ...   ....   .....                                     |
-OP | SID | DATA                                           |
-______________________________________________________    V
\ No newline at end of file
+   ...   ....   .....     |                           |   |
+______________________________________________________    |
+OP | SID | DATA  | LENGTH |                           |   |
+______________________________________________________    V
+
+... LENGTH is uint64 size of record
\ No newline at end of file