Merge pull request #5575 from MicrosoftDocs/FromPublicRepo

Confirm merge from FromPublicRepo to master to sync with https://github.com/MicrosoftDocs/sql-docs (branch live)

Author: v-alje

docs/ssms/agent/sql-server-agent.md

@@ -128,7 +128,7 @@ You can define an operator as the alias for a group of individuals. In this way,
 Members of the **SQLAgentUserRole**, **SQLAgentReaderRole**, and **SQLAgentOperatorRole** fixed database roles in **msdb**, and members of the **sysadmin** fixed server role have access to [!INCLUDE[ssNoVersion](../../includes/ssnoversion_md.md)] Agent. A user that does not belong to any of these roles cannot use [!INCLUDE[ssNoVersion](../../includes/ssnoversion_md.md)] Agent. For more information on the roles used by [!INCLUDE[ssNoVersion](../../includes/ssnoversion_md.md)] Agent, see [Implement SQL Server Agent Security](../../ssms/agent/implement-sql-server-agent-security.md).  
 
 ### Subsystems  
-A subsystem is a predefined object that represents functionality that is available to a job step. Each proxy has access to one or more subsystems. Subsystems provide security because they delimit access to the functionality that is available to a proxy. Each job step runs in the context of a proxy, except for [!INCLUDE[tsql](../../includes/tsql_md.md)] job steps. [!INCLUDE[tsql](../../includes/tsql_md.md)] job steps use the EXECUTE AS command to set the security context.  
+A subsystem is a predefined object that represents functionality that is available to a job step. Each proxy has access to one or more subsystems. Subsystems provide security because they delimit access to the functionality that is available to a proxy. Each job step runs in the context of a proxy, except for [!INCLUDE[tsql](../../includes/tsql_md.md)] job steps. [!INCLUDE[tsql](../../includes/tsql_md.md)] job steps use the EXECUTE AS command to set the security context to the owner of the Job.  
 
 [!INCLUDE[ssNoVersion](../../includes/ssnoversion_md.md)] defines the subsystems listed in the following table: