1 files changed, 9 insertions, 0 deletions

diff --git a/miscutils/chat.c b/miscutils/chat.c
index d8370a963..ce994f870 100644
--- a/miscutils/chat.c
+++ b/miscutils/chat.c
@@ -7,6 +7,15 @@
  *
  * Licensed under GPLv2, see file LICENSE in this source tree.
  */
+
+//usage:#define chat_trivial_usage
+//usage:       "EXPECT [SEND [EXPECT [SEND...]]]"
+//usage:#define chat_full_usage "\n\n"
+//usage:       "Useful for interacting with a modem connected to stdin/stdout.\n"
+//usage:       "A script consists of one or more \"expect-send\" pairs of strings,\n"
+//usage:       "each pair is a pair of arguments. Example:\n"
+//usage:       "chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'"
+
 #include "libbb.h"
 
 // default timeout: 45 sec