Index: share/man/man9/style.9
===================================================================
--- share/man/man9/style.9
+++ share/man/man9/style.9
@@ -26,7 +26,7 @@
 .\"	From: @(#)style	1.14 (Berkeley) 4/28/95
 .\" $FreeBSD$
 .\"
-.Dd November 1, 2018
+.Dd May 29, 2019
 .Dt STYLE 9
 .Os
 .Sh NAME
@@ -777,11 +777,22 @@
 }
 
 static void
-usage()
+usage(void)
 {
-	/* Insert an empty line if the function has no local variables. */
+	/* Optional blank line goes here. */
 .Ed
 .Pp
+Optionally, insert a blank line at the beginning of functions with no local
+variables.
+Older versions of this
+.Nm
+document required the blank line convention, so it is widely used in existing
+code.
+.Pp
+Do not insert a blank line at the beginning of functions with local variables.
+Instead, these should have local variable declarations first, followed by one
+blank line, followed by the first statement.
+.Pp
 Use
 .Xr printf 3 ,
 not