From b7edcd7b729dbaa7c5a5a5b85d522f528550affa Mon Sep 17 00:00:00 2001
From: Georgiy Komarov <jubnzv@gmail.com>
Date: Thu, 21 Nov 2024 11:24:09 +0000
Subject: [PATCH] feat(detectors): `CellOverflow`->`CellBounds`

---
 docs/detectors.md                                 |  2 +-
 docs/detectors/{CellOverflow.md => CellBounds.md} | 13 +++++++++----
 sidebars.ts                                       |  4 ++--
 3 files changed, 12 insertions(+), 7 deletions(-)
 rename docs/detectors/{CellOverflow.md => CellBounds.md} (68%)

diff --git a/docs/detectors.md b/docs/detectors.md
index ed5f9611a..a873df467 100644
--- a/docs/detectors.md
+++ b/docs/detectors.md
@@ -12,7 +12,7 @@ title: Detectors Overview
 | 1  | [ArgCopyMutation](./detectors/ArgCopyMutation.md) | High |  | ✔ |
 | 2  | [AsmIsUsed](./detectors/AsmIsUsed.md) | Info |  |  |
 | 3  | [BranchDuplicate](./detectors/BranchDuplicate.md) | High |  | ✔ |
-| 4  | [CellOverflow](./detectors/CellOverflow.md) | Critical |  | ✔ |
+| 4  | [CellBounds](./detectors/CellBounds.md) | Critical |  | ✔ |
 | 5  | [ConstantAddress](./detectors/ConstantAddress.md) | Info |  |  |
 | 6  | [DivideBeforeMultiply](./detectors/DivideBeforeMultiply.md) | High | ✔ | ✔ |
 | 7  | [DumpIsUsed](./detectors/DumpIsUsed.md) | Info |  |  |
diff --git a/docs/detectors/CellOverflow.md b/docs/detectors/CellBounds.md
similarity index 68%
rename from docs/detectors/CellOverflow.md
rename to docs/detectors/CellBounds.md
index 9ece5b6e0..c1d616207 100644
--- a/docs/detectors/CellOverflow.md
+++ b/docs/detectors/CellBounds.md
@@ -1,15 +1,20 @@
-# CellOverflow
-A detector that identifies cell overflow problems.
+# CellBounds
+A detector that identifies cell overflow and underflow problems.
 
 ## Why is it bad?
-Cell overflow is an issue specific to the TON blockchain. TON stores data in
-cells, which are low-level data structures used for serialization and deserialization.
+Cell overflow and underflow are issues specific to the TON blockchain. TON
+stores data in cells, which are low-level data structures used for serialization
+and deserialization.
 
 The overflow issue occurs when the user attempts to store more data in a cell
 than it supports. The current limitation is 1023 bits and 4 references to other
 cells. When these limits are exceeded, the contract throws an error with the
 exit code `8` during the compute phase.
 
+The underflow issue occurs when the user attempts to get more data from a
+structure than it supports. cells. When it happens, the contract throws an
+error with the exit code `9` during the compute phase.
+
 ## Example
 ```tact
 // Bad: storeRef is used more than 4 times
diff --git a/sidebars.ts b/sidebars.ts
index 21b8877ec..ec05d2ce4 100644
--- a/sidebars.ts
+++ b/sidebars.ts
@@ -72,8 +72,8 @@ const sidebars: SidebarsConfig = {
         },
         {
           type: 'doc',
-          id: 'detectors/CellOverflow',
-          label: 'CellOverflow',
+          id: 'detectors/CellBounds',
+          label: 'CellBounds',
         },
         {
           type: 'doc',