diff --git a/pages/common/nnn.md b/pages/common/nnn.md
index d10f5ac409..1c14c8aef7 100644
--- a/pages/common/nnn.md
+++ b/pages/common/nnn.md
@@ -22,3 +22,7 @@
 - Sort files on [a]pparent disk usage / [d]isk usage / [e]xtension / [r]everse / [s]ize / [t]ime / [v]ersion:
 
 `nnn -T {{a|d|e|r|s|t|v}}`
+
+- Open a file you have selected. Select the file then press `o`, and type a program to open the file in:
+
+`nnn -o`