diff --git a/doc/3_advanced.md b/doc/3_advanced.md
index 02f8c6a..d9081ea 100644
--- a/doc/3_advanced.md
+++ b/doc/3_advanced.md
@@ -75,10 +75,10 @@ You must use the function `user_is_allowed` to check if a user has the capabilit
 ### Interactive Chats
 Interactive chats are simple Bash scripts, reading user input as TEXT and output TEXT to the user.
 
-**Important**:  Interactive scripts run in a pipeline, it's **not possible** to use bashbot functions and variables!
+**Important**: Scripts run as seperate programs in a [pipeline](https://www.geeksforgeeks.org/piping-in-unix-or-linux/), it's **not possible** to use bashbot functions and variables!
 
 ```bash
-user input as TEXT   |   script reads TEXT  |   output sent to user as formated TEXT (see below) 
+mycommands.sh send user input as TEXT   |   script reads TEXT  |   bashbot.sh reads output as formated TEXT (see below) 
 ```
 
 To create a new interactive chat script copy `scripts/interactive.sh.clean` to e.g. `scripts/mynewinteractive.sh`, make it executable