diff -r 9ad06889a5d1 sys/man/4/rio
--- a/sys/man/4/rio	Mon Nov 18 01:06:02 2019 -0800
+++ b/sys/man/4/rio	Tue Nov 19 12:15:00 2019 +1030
@@ -201,8 +201,10 @@
 .TP
 .B wctl
 may be read or written.
-When read, it returns the location of the window as four decimal integers formatted
-in the usual 12-character style: upper left
+When read, it returns the location of the window as four decimal
+integers, padded to 12 characters as described in
+.IR image(6):
+upper left
 .I x
 and
 .IR y ,
@@ -210,7 +212,8 @@
 .I x
 and
 .IR y .
-Following these numbers are strings describing the window's state:
+Following these numbers are strings, also padded to 12 characters,
+describing the window's state:
 .B hidden
 or
 .BR visible ;