Adding details on the reader role when RBAC is enabled

Author: Derek Legenzoff

articles/search/search-security-rbac.md

@@ -30,7 +30,7 @@ Built-in roles include generally available and preview roles. If these roles are
 | ---- | ---------------------------- |
 | [Owner](../role-based-access-control/built-in-roles.md#owner) | (Generally available) Full access to the search resource, including the ability to assign Azure roles. Subscription administrators are members by default.</br></br> (Preview) This role has the same access as the Search Service Contributor role on the data plane. It includes access to all data plane actions except the ability to query the search index or index documents. |
 | [Contributor](../role-based-access-control/built-in-roles.md#contributor) | (Generally available) Same level of access as Owner, minus the ability to assign roles or change authorization options. </br></br> (Preview) This role has the same access as the Search Service Contributor role on the data plane. It includes access to all data plane actions except the ability to query the search index or index documents. |
-| [Reader](../role-based-access-control/built-in-roles.md#reader) | (Generally available) Limited access to partial service information. In the portal, the Reader role can access information in the service Overview page, in the Essentials section and under the Monitoring tab. All other tabs and pages are off limits. </br></br>This role has access to service information: service name, resource group, service status, location, subscription name and ID, tags, URL, pricing tier, replicas, partitions, and search units. This role also has access to service metrics: search latency, percentage of throttled requests, average queries per second. </br></br>This role doesn't allow access to API keys, role assignments, content (indexes or synonym maps), or content metrics (storage consumed, number of objects). |
+| [Reader](../role-based-access-control/built-in-roles.md#reader) | (Generally available) Limited access to partial service information. In the portal, the Reader role can access information in the service Overview page, in the Essentials section and under the Monitoring tab. All other tabs and pages are off limits. </br></br>This role has access to service information: service name, resource group, service status, location, subscription name and ID, tags, URL, pricing tier, replicas, partitions, and search units. This role also has access to service metrics: search latency, percentage of throttled requests, average queries per second. </br></br>This role doesn't allow access to API keys, role assignments, content (indexes or synonym maps), or content metrics (storage consumed, number of objects). </br></br> (Preview) When you enable the RBAC preview for the data plane, the Reader role has read access across the entire service. This allows you to read search metrics, content metrics (storage consumed, number of objects), read access to the definitions for data plane resources (indexes, indexers, etc.). The Reader role still won't have access to read API keys or read content within indexes. |
 | [Search Service Contributor](../role-based-access-control/built-in-roles.md#search-service-contributor) | (Generally available) This role is identical to the Contributor role and applies to control plane operations. </br></br>(Preview) When you enable the RBAC preview for the data plane, this role also provides full access to all data plane actions on indexes, synonym maps, indexers, data sources, and skillsets as defined by [`Microsoft.Search/searchServices/*`](../role-based-access-control/resource-provider-operations.md#microsoftsearch). This role does not give you access to query search indexes or index documents. This role is for search service administrators who need to manage the search service and its objects, but without the ability to view or access object data. </br></br>Like Contributor, members of this role can't make or manage role assignments or change authorization options. To use the preview capabilities of this role, your service must have the preview feature enabled, as described in this article. |
 | [Search Index Data Contributor](../role-based-access-control/built-in-roles.md#search-index-data-contributor) | (Preview) Provides full data plane access to content in all indexes on the search service. This role is for developers or index owners who need to import, refresh, or query the documents collection of an index. |
 | [Search Index Data Reader](../role-based-access-control/built-in-roles.md#search-index-data-reader) | (Preview) Provides read-only data plane access to search indexes on the search service. This role is for apps and users who run queries. |