diff --git a/docs/content.en/docs/reference/value.md b/docs/content.en/docs/reference/value.md
index 9d0fe42d..44ce8b16 100644
--- a/docs/content.en/docs/reference/value.md
+++ b/docs/content.en/docs/reference/value.md
@@ -751,6 +751,23 @@ comment_type&       comments()       noexcept;
 
 Returns a reference to the comment container.
 
+-----
+
+### `accessed()`
+
+```cpp
+bool accessed() const;
+```
+
+#### Return Value
+
+Returns `true` only if the `value` has been accessed via `as_xxx` or `is_xxx`.
+Otherwise, it returns `false`.
+
+#### Remarks
+
+It exists only when `TOML11_ENABLE_ACCESS_CHECK` is defined.
+
 ## Non-Member Functions
 
 ### `operator==`
diff --git a/docs/content.ja/docs/reference/value.md b/docs/content.ja/docs/reference/value.md
index 99853f91..fb26a7f1 100644
--- a/docs/content.ja/docs/reference/value.md
+++ b/docs/content.ja/docs/reference/value.md
@@ -751,6 +751,23 @@ comment_type&       comments()       noexcept;
 
 コメント用コンテナへの参照を返します。
 
+-----
+
+### `accessed()`
+
+```cpp
+bool accessed() const;
+```
+
+#### 戻り値
+
+その`value`がパース後に一度でも`as_xxx`や`is_xxx`でアクセスされていた場合、`true`を返します。
+それ以外の場合、`false`を返します。
+
+#### 備考
+
+`TOML11_ENABLE_ACCESS_CHECK`が定義されている場合にのみ存在します。
+
 ## 非メンバ関数
 
 ### `operator==`