Update sp-fulltext-service-transact-sql.md (#34772)

Author: VinnieKhanna

docs/relational-databases/system-stored-procedures/sp-fulltext-service-transact-sql.md

@@ -71,7 +71,9 @@ The value of the specified property. *@value* is **sql_variant**, with a default
 | `resource_usage` | **int** | Has no function in [!INCLUDE [sql2008-md](../../includes/sql2008-md.md)] and later versions, and is ignored. |
 | `update_languages` | `NULL` | Updates the list of languages and filters that are registered with full-text search. The languages are specified when configuring indexing and in full-text queries. Filters are used by the filter daemon host to extract textual information from corresponding file formats such as `.docx` stored in data types, such as **varbinary**, **varbinary(max)**, **image**, or **xml**, for full-text indexing.<br /><br />For more information, see [View or change registered filters and word breakers](../search/view-or-change-registered-filters-and-word-breakers.md). |
 | `upgrade_option` | **int** | Controls how full-text indexes are migrated when upgrading a database from [!INCLUDE [ssVersion2005](../../includes/ssversion2005-md.md)] to a later version. This property applies to upgrading by attaching a database, restoring a database backup, restoring a file backup, or copying the database by using the Copy Database Wizard.<br /><br />One of:<br /><br />- `0` = Full-text catalogs are rebuilt using the new and enhanced word breakers. Rebuilding indexes can take some time, and a significant amount of CPU and memory might be required after the upgrade.<br /><br />- `1` = Full-text catalogs are reset. [!INCLUDE [ssVersion2005](../../includes/ssversion2005-md.md)] full-text catalog files are removed, but the metadata for full-text catalogs and full-text indexes is retained. After being upgraded, all full-text indexes are disabled for change tracking and crawls aren't started automatically. The catalog will remain empty until you manually issue a full population, after the upgrade completes.<br /><br />- `2` = Full-text catalogs are imported. Typically, import is faster than rebuild. For example, when using only one CPU, import runs about 10 times faster than rebuild. However, an imported full-text catalog doesn't use the new and enhanced word breakers, so you might want to rebuild your full-text catalogs instead. Removed in [!INCLUDE [sssql22-md](../../includes/sssql22-md.md)] and later versions, and raises an error.<br /><br />**Note:** Rebuild can run in multi-threaded mode, and if more than 10 CPUs are available, rebuild might run faster than import if you allow rebuild to use all of the CPUs.<br /><br />If a full-text catalog isn't available, the associated full-text indexes are rebuilt. This option is only available for [!INCLUDE [ssVersion2005](../../includes/ssversion2005-md.md)] databases.<br /><br />For information about choosing a full-text upgrade option, see full-[Upgrade Full-Text Search](../search/upgrade-full-text-search.md).<br /><br />**Note:** To set this property in [!INCLUDE [ssManStudioFull](../../includes/ssmanstudiofull-md.md)], use the **Full-Text Upgrade Option** property. For more information, see [Manage and Monitor Full-Text Search for a Server Instance](../search/manage-and-monitor-full-text-search-for-a-server-instance.md). |
-| `verify_signature` | **int** | Indicates whether the Full-Text Engine loads only signed binaries. By default, only trusted, signed binaries are loaded.<br /><br />`1` = Verify that only trusted, signed binaries are loaded (default).<br /><br />`0` = Don't verify whether binaries are signed. |
+| `verify_signature`<sup>1</sup> | **int** | Indicates whether the Full-Text Engine loads only signed binaries. By default, only trusted, signed binaries are loaded.<br /><br />`1` = Verify that only trusted, signed binaries are loaded (default).<br /><br />`0` = Don't verify whether binaries are signed. |
+
+<sup>1</sup> When `verify_signature` is `1`, the Full-Text Engine only checks the cached Certificate Revocation List (CRL) before loading binaries. You should periodically refresh your local CRL cache with **[certutil](/windows-server/administration/windows-commands/certutil)**, when using third party binaries.
 
 ## Return code values