1 files changed, 9 insertions, 0 deletions

diff --git a/include/usage.h b/include/usage.h
index d1878827b..0422c7fcf 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -204,6 +204,15 @@ USE_FEATURE_BRCTL_FANCY("\n" \
        "        -e      End each line with $\n" \
        "        -t      Show tabs as ^I\n" \
        "        -v      Don't use ^x or M-x escapes"
+
+#define chat_trivial_usage \
+       "EXPECT [SEND [EXPECT [SEND...]]]"
+#define chat_full_usage \
+       "Useful for interacting with a modem connected to stdin/stdout.\n" \
+       "A script consists of one or more \"expect-send\" pairs of strings,\n" \
+       "each pair is a pair of arguments. Example:\n" \
+       "chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'" \
+
 #define chattr_trivial_usage \
        "[-R] [-+=AacDdijsStTu] [-v version] files..."
 #define chattr_full_usage \