udhcpc: convert to getopt32
diff --git a/include/usage.h b/include/usage.h
index e7e46be..98c8027 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1,4 +1,13 @@
/* vi: set sw=4 ts=4: */
+/*
+ * This file suffers from chronically incorrect tabification
+ * of messages. Before editing this file:
+ * 1. Switch you editor to 8-space tab mode.
+ * 2. Do not use \t in messages, use real tab character.
+ * 3. Start each source line with message as follows:
+ * |<7 spaces>"text with tabs"
+ */
+
#ifndef __BB_USAGE_H__
#define __BB_USAGE_H__
