diff --git a/aio/content/guide/workspace-config.md b/aio/content/guide/workspace-config.md
index 43f3fe38d0..6ae23a0f8a 100644
--- a/aio/content/guide/workspace-config.md
+++ b/aio/content/guide/workspace-config.md
@@ -174,6 +174,12 @@ By default, a `production` configuration is defined, and the `ng build` command
 
 You can define and name additional alternate configurations (such as `stage`, for instance) appropriate to your development process. Some examples of different build configurations are `stable`, `archive` and `next` used by AIO itself, and the individual locale-specific configurations required for building localized versions of an app. For details, see [Internationalization (i18n)](guide/i18n#merge-aot).
 
+You can select an alternate configuration by passing its name to the `--configuration` command line flag.
+
+You can also pass in more than one configuration name as a comma-separated list. For example, to apply both `stage` and `fr` build configurations, use the command `ng build --configuration stage,fr`. In this case,  the command parses the named configurations from left to right. If multiple configurations change the same setting, the last-set value is the final one.
+
+If the `--prod` command line flag is also used, it is applied first, and its settings can be overridden by any configurations specified via the `--configuration` flag.
+
 {@a build-props}
 
 ### Additional build and test options