diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 8a4a54c..c454f96 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -10198,17 +10198,30 @@
 							*winnr()*
 winnr([{arg}])	The result is a Number, which is the number of the current
 		window.  The top window has number 1.
-		When the optional argument is "$", the number of the
-		last window is returned (the window count). >
-			let window_count = winnr('$')
-<		When the optional argument is "#", the number of the last
-		accessed window is returned (where |CTRL-W_p| goes to).
-		If there is no previous window or it is in another tab page 0
-		is returned.
+
+		The optional argument {arg} supports the following values:
+			$	the number of the last window (the window
+				count).
+			#	the number of the last accessed window (where
+				|CTRL-W_p| goes to).  If there is no previous
+				window or it is in another tab page 0 is
+				returned.
+			{N}j	the number of the Nth window below the
+				current window (where |CTRL-W_j| goes to).
+			{N}k	the number of the Nth window above the current
+				window (where |CTRL-W_k| goes to).
+			{N}h	the number of the Nth window left of the
+				current window (where |CTRL-W_h| goes to).
+			{N}l	the number of the Nth window right of the
+				current window (where |CTRL-W_l| goes to).
 		The number can be used with |CTRL-W_w| and ":wincmd w"
 		|:wincmd|.
 		Also see |tabpagewinnr()| and |win_getid()|.
-
+		Examples: >
+			let window_count = winnr('$')
+			let prev_window = winnr('#')
+			let wnum = winnr('3k')
+<
 							*winrestcmd()*
 winrestcmd()	Returns a sequence of |:resize| commands that should restore
 		the current window sizes.  Only works properly when no windows