Solids Builder - Flowchart

Flowchart - Used to create sub-flows of the main flow

The flowchart does not require arguments to be evaluated. However, it requires the contained activities to be connected by flow lines, represented by the selected line:

Note that the first activity of the model builder is a Flowchart. Don't delete it!

The flowchart cannot be called as a variable, so allow it to have a name that doesn't respect the activity naming rules.