diff --git a/README.md b/README.md
index 6da716d3..7cc82c72 100644
--- a/README.md
+++ b/README.md
@@ -116,11 +116,13 @@ Terminology differs somewhat between various database systems; please refer to t
 * `is_svc_account`: Either domain user name or system account. Defaults to 'NT AUTHORITY\NETWORK SERVICE'.
 * `is_svc_password`: Password for domain user.
 * `pid`: Specify the SQL Server product key to configure which edition you would like to use. Can be left empty for evaluation versions.
-* `install_switches`: Hash of install switches you would like to be based to a config file during installation.
+* `install_switches`: Hash of optional installer switches for SQL Server setup.
 
-** Please not that any duplicates from what we provide on the command line will be ignored. For more information see the links below
+  Please note that if an option is set in both its own specific parameter and `install_switches`, the specifically named parameter takes precedence. For example, if you set the product key in both `pid` and in `install_switches`, the `pid` parameter will be honored.
 
-* [Installer switches](https://msdn.microsoft.com/en-us/library/ms144259.aspx)
+For more information about installer switches and configuration, see the links below:
+
+* [Installer Switches](https://msdn.microsoft.com/en-us/library/ms144259.aspx)
 * [Configuration File](https://msdn.microsoft.com/en-us/library/dd239405.aspx)
 
 #### sqlserver_instance
@@ -143,11 +145,13 @@ Terminology differs somewhat between various database systems; please refer to t
 * `sql_svc_account`: Account for SQL Server service: Domain\User or system account.
 * `sql_svc_password`: The SQL Server service password; required only for a domain account.
 * `sql_sysadmin_accounts`: The Windows or SQL account(s) to provision as SQL Server system administrators.
-* `install_switches`: Hash of install switches you would like to be based to a config file during installation.
+* `install_switches`: Hash of optional installer switches for SQL Server instance setup.
+
+  Please note that if an option is set in both its own specific parameter and `install_switches`, the specifically named parameter takes precedence. For example, if you set the product key in both `pid` and in `install_switches`, the `pid` parameter will be honored.
 
-** Please not that any duplicates from what we provide on the command line will be ignored. For more information see the links below
+For more information about installer switches and configuration, see the links below:
 
-* [Installer switches](https://msdn.microsoft.com/en-us/library/ms144259.aspx)
+* [Installer Switches](https://msdn.microsoft.com/en-us/library/ms144259.aspx)
 * [Configuration File](https://msdn.microsoft.com/en-us/library/dd239405.aspx)
 
 ### Defined Types