From d7197998ddda32f4a69562372487a1ceaf090987 Mon Sep 17 00:00:00 2001
From: GochoMugo <mugo@forfuture.co.ke>
Date: Mon, 11 Dec 2017 18:32:19 +0300
Subject: [PATCH] doc: Add note on specifying additional Telegram query options

---
 doc/usage.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/doc/usage.md b/doc/usage.md
index 657846b..9f73897 100644
--- a/doc/usage.md
+++ b/doc/usage.md
@@ -129,6 +129,20 @@ const fileOptions = {
 bot.sendAudio(chatId, data, {}, fileOptions);
 ```
 
+**NOTE:** You **MUST** provide an empty object (`{}`) in place of
+*Additional Telegram query options*, if you have **no** query options
+to specify. For example,
+
+```js
+// WRONG!
+// 'fileOptions' will be taken as additional Telegram query options!!!
+bot.sendAudio(chatId, data, fileOptions);
+
+// RIGHT!
+bot.sendAudio(chatId, data, {}, fileOptions);
+```
+
+
 <a name="sending-files-options"></a>
 ### File Options (metadata)