Add documentation for the new redraw option.

1 files changed, 2 insertions, 1 deletions

diff --git a/main.c b/main.c
index 328a12c..2f7eb2c 100644
--- a/main.c
+++ b/main.c
@@ -65,7 +65,8 @@ usage()
 		"  -e <char>\tSet the detach character to <char>, defaults "
 		"to ^\\.\n"
 		"  -E\t\tDisable the detach character.\n"
-		"  -r <method>\tUse the specified redraw method when redrawing:\n"
+		"  -r <method>\tSet the redraw method to <method>. The "
+		"valid methods are:\n"
 		"\t\t     none: Don't redraw at all.\n"
 		"\t\t   ctrl_l: Send a Ctrl L character to the program.\n"
 		"\t\t    winch: Send a WINCH signal to the program.\n"