Index: share/man/man7/ports.7
===================================================================
--- share/man/man7/ports.7
+++ share/man/man7/ports.7
@@ -217,6 +217,8 @@
 .It Cm install
 Install the port and register it with the package system.
 This is all you really need to do.
+.It Cm install-missing-packages
+Install missing dependencies from packages instead of building them.
 .El
 .Pp
 The following targets are not run during the normal install process.