Update open-wopen.md

Clarify that _O_TEMPORARY sets FILE_SHARE_DELETE.

Author: Steve Wishnousky

docs/c-runtime-library/reference/open-wopen.md

@@ -72,7 +72,7 @@ The **`_open`** function opens the file specified by *`filename`* and prepares i
 | **`_O_BINARY`** | Opens the file in binary (untranslated) mode. (See [`fopen`](fopen-wfopen.md) for a description of binary mode.) |
 | **`_O_CREAT`** | Creates a file and opens it for writing. Has no effect if the file specified by *filename* exists. The *pmode* argument is required when **`_O_CREAT`** is specified. |
 | **`_O_CREAT`** | **`_O_SHORT_LIVED`** | Creates a file as temporary and if possible does not flush to disk. The *pmode* argument is required when **`_O_CREAT`** is specified. |
-| **`_O_CREAT`** | **`_O_TEMPORARY`** | Creates a file as temporary; the file is deleted when the last file descriptor is closed. The *pmode* argument is required when **`_O_CREAT`** is specified. |
+| **`_O_CREAT`** | **`_O_TEMPORARY`** | Creates a file as temporary; the file is deleted when the last file descriptor is closed. The *pmode* argument is required when **`_O_CREAT`** is specified. To preserve legacy behavior for app-compatibility, other processes are not prevented from deleting this file. |
 | **`_O_CREAT`** | `_O_EXCL` | Returns an error value if a file specified by *filename* exists. Applies only when used with **`_O_CREAT`**. |
 | **`_O_NOINHERIT`** | Prevents creation of a shared file descriptor. |
 | **`_O_RANDOM`** | Specifies that caching is optimized for, but not restricted to, random access from disk. |