diff --git a/commands.sh b/commands.sh
index 0b10d04..d83597b 100644
--- a/commands.sh
+++ b/commands.sh
@@ -15,7 +15,7 @@
 # This file is public domain in the USA and all free countries.
 # Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
 #
-#### $$VERSION$$ v1.31-dev-13-g127cc85
+#### $$VERSION$$ v1.35-dev-6-gc90b565
 #
 
 # bashbot locale defaults to c.UTF-8, adjust locale in mycommands.sh if needed
@@ -66,6 +66,7 @@ fi
 # copy "mycommands.sh.dist" to "mycommands.sh" and change the values there
 # defaults to no inline, all commands  and nonsense home dir
 export INLINE="0"
+export CALLBACK="0"
 export MEONLY="0"
 export FILE_REGEX="${BASHBOT_ETC}/.*"
 
@@ -76,14 +77,18 @@ export FILE_REGEX="${BASHBOT_ETC}/.*"
 
 
 if [ -z "$1" ] || [[ "$1" == *"debug"* ]];then
-    # detect inline commands....
-    # no default commands, all processing is done in myinlines()
-    if [ "${INLINE}" != "0" ] && [ -n "${iQUERY[ID]}" ]; then
+    #################
+    # detect inline and callback query
+    if [[ -n "${iQUERY[ID]}" && "${INLINE:-0}" != "0" ]]; then
     	# forward iinline query to optional dispatcher
 	_exec_if_function myinlines
 
-    # regular (global) commands ...
-    # your commands are in mycommands() 
+    elif [[ -n "${iBUTTON[ID]}" && "${CALLBACK:-0}" != "0" ]]; then
+    	# forward iinline query to optional dispatcher
+	_exec_if_function mycallbacks
+
+    #################
+    # regular command
     else
 	
 	###################
diff --git a/doc/6_reference.md b/doc/6_reference.md
index 731b7d5..390bddd 100644
--- a/doc/6_reference.md
+++ b/doc/6_reference.md
@@ -216,8 +216,10 @@ _keyboard_numpad
 *See also: [Keyboard Markup](https://core.telegram.org/bots/api/#replykeyboardmarkup)*
 
 
+----
+
 ##### send_button
-`send_button` sends a text message with a single button for opneing and URL.
+`send_button` sends a text message with a single button to open an URL attached.
 
 *usage:*  send_button "$CHAT[ID]" "message" "text" "URL"
 
@@ -253,8 +255,8 @@ send_inline_keyboard "${CHAT[ID]}" "message" "$(_button_row "b1|http://rrr.de" "
 ```
 
 ##### send_inline_keyboard
-`send_inline_keyboard` send a message with attached buttons, buttons are given as an array of buttons in JSON format.
-In contrast to `send_keyboard` the button are attached to a message and do not send text to the chat.
+`send_inline_keyboard` sends a message with buttons attached, buttons must be given in JSON format.
+In contrast to `send_keyboard` buttons are attached to the message and do not send text.
 
 *usage:*  send_inline_keyboard "CHAT[ID]" "message" "[JSON button array]"
 
@@ -1321,5 +1323,5 @@ The name of your bot is available as bash variable "$ME", there is no need to ca
 #### [Prev Best Practice](5_practice.md)
 #### [Next Notes for Developers](7_develop.md)
 
-#### $$VERSION$$ v1.35-dev-5-gcc7afdb
+#### $$VERSION$$ v1.35-dev-6-gc90b565
 
diff --git a/mycommands.conf b/mycommands.conf
index 736928d..f2052d0 100644
--- a/mycommands.conf
+++ b/mycommands.conf
@@ -12,7 +12,7 @@
 #      Author: KayM (gnadelwartz), kay@rrr.de
 #     Created: 09.01.2021 07:27
 #
-#### $$VERSION$$ v1.31-dev-15-g07f026c
+#### $$VERSION$$ v1.35-dev-6-gc90b565
 #######################################################
 
 ##########
@@ -47,6 +47,10 @@ Edit commands and messages in mycommands.sh!
 # To enable this option in your bot, send the /setinline command to @BotFather.
 export INLINE="0"
 
+# Set CALLBACK to 1 in order to receive callback queries.
+# callbacks are sent from inline_keyboards (buttons) attached tp bot messages
+export CALLBACK="0"
+
 # if your bot is group admin it get commands sent to other bots
 # Set MEONLY to 1 to ignore commands sent to other bots
 export MEONLY="0"
diff --git a/mycommands.sh b/mycommands.sh
index bc27071..c441061 100644
--- a/mycommands.sh
+++ b/mycommands.sh
@@ -13,7 +13,7 @@
 #     License: WTFPLv2 http://www.wtfpl.net/txt/copying/
 #      Author: KayM (gnadelwartz), kay@rrr.de
 #
-#### $$VERSION$$ v1.30-0-g3266427
+#### $$VERSION$$ v1.35-dev-6-gc90b565
 #######################################################
 # shellcheck disable=SC1117
 
@@ -179,6 +179,40 @@ else
 	esac
      }
 
+     mycallbacks() {
+	#######################
+	# callbacks from buttons bot has attached to messages can processed here
+	# we have no standard use case for processing callbacks, we log them based on user and chat
+	case "${USER[ID]}+${CHAT[ID]}" in
+	    'USERID1+'*) # do something for all callbacks from USER
+		printf "%s: U=%s C=%s D=%s\n" "$(date)" "${iBOTTON[USER_ID]}" "${iBOTTON[CHAT_ID]}" "${iBUTTON[DATA]}"\
+				>>"${DATADIR}/${iBOTTON[USER_ID]}.log"
+		answer_callback_query "${iBUTTON[ID]}" "Request has been logged in your user log..."
+		return
+		;;
+	    *'+CHATID1') # do something for all callbacks from CHAT
+		printf "%s: U=%s C=%s D=%s\n" "$(date)" "${iBOTTON[USER_ID]}" "${iBOTTON[CHAT_ID]}" "${iBUTTON[DATA]}"\
+				>>"${DATADIR}/${iBOTTON[CHAT_ID]}.log"
+		answer_callback_query "${iBUTTON[ID]}" "Request has been logged in chat log..."
+		return
+		;;
+	    'USERID2+CHATID2') # do something only for callbacks form USER in CHAT
+		printf "%s: U=%s C=%s D=%s\n" "$(date)" "${iBOTTON[USER_ID]}" "${iBOTTON[CHAT_ID]}" "${iBUTTON[DATA]}"\
+				>>"${DATADIR}/${iBOTTON[USER_ID]}-${iBOTTON[CHAT_ID]}.log"
+		answer_callback_query "${iBUTTON[ID]}" "Request has been logged in user-chat log..."
+		return
+		;;
+	    *)	# all other callbacks are processed here
+		: # your processing here ...
+		:	
+		# Telegram needs an ack each callback query, default empty
+		answer_callback_query "${iBUTTON[ID]}" ""
+		;;
+	esac
+
+
+     }
+
      myinlines() {
 	#######################
 	# Inline query examples, do not use them in production (except image search ;-)