If In a project, I can use //USEUNIT to reuse functions.
How can I reuse functions across project?
<font color="red">How to Test,it's a question</font>
You can place the unit you want to re-use in the new project by using "Add / Existing".
Add the unit containing the needed function to the target project as an existing item. See the "Calling Routines Declared in Another Project" help topic.
Jared - AQA Support
Thanks SteveHeidstra & Jared
I use "Copy the needed routines to a new unit" before, I'll try to use "Add | New Item" method now.