diff --git a/docs/sources/reference/commandline/cli.md b/docs/sources/reference/commandline/cli.md
index d58b9754d5..bf34b7d923 100644
--- a/docs/sources/reference/commandline/cli.md
+++ b/docs/sources/reference/commandline/cli.md
@@ -666,7 +666,11 @@ You'll need two shells for this example.
 
 The `docker exec` command runs a new command in a running container.
 
-The `docker exec` command will typically be used after `docker run` or `docker start`.
+The command started using `docker exec` will only run while the container's primary
+process (`PID 1`) is running, and will not be restarted if the container is restarted.
+
+If the container is paused, then the `docker exec` command will wait until the
+container is unpaused, and then run.
 
 #### Examples