Add example use.mask usage.

diff --git a/man/portage.5 b/man/portage.5
index b495514eee71f2cd2a5864e93fb137abeed82b1a..8f48f792a22fd0803cb670a6ecfbeea4bca22fe7 100644 (file)
--- a/man/portage.5
+++ b/man/portage.5
@@ -399,6 +399,14 @@ a '\-'.
 \- comments begin with # (no inline comments)
 \- one USE flag per line
 .fi
+
+.I Example:
+.nf
+# mask doc
+doc
+# unmask mysql
+\-mysql
+.fi
 .TP
 .BR use.unsatisfiable
 Some USE flags enable optional dependencies, which are allowed to be