diff --git a/doc/api/cli.md b/doc/api/cli.md
index 072b3b8ead55b8..ce0d79f5b1f40e 100644
--- a/doc/api/cli.md
+++ b/doc/api/cli.md
@@ -700,6 +700,20 @@ They are omitted from the values.
 USERNAME="nodejs" # will result in `nodejs` as the value.
 ```
 
+Multi-line values are supported:
+
+```text
+MULTI_LINE="THIS IS
+A MULTILINE"
+# will result in `THIS IS\nA MULTILINE` as the value.
+```
+
+Export keyword before a key is ignored:
+
+```text
+export USERNAME="nodejs" # will result in `nodejs` as the value.
+```
+
 ### `-e`, `--eval "script"`
 
 <!-- YAML