# Connecting elements in a program

You can connect elements like variables and Program Organisation Units. You can only connect inputs with outputs.

1. Start editing the real-time application.
2. In the menu bar, click Program.
3. Add variables or POUs to the program.
4. Click the output of an element and drag a link to the input of the element you want to connect.
5. Drop the link at the output of the element you want to connect.

Functions and function blocks of the standard library