https://www.scirra.com/manual/125/system-actions
Go to layout
Go to layout (by name)
Switch to another layout in the project. Note that global variables keep their current value - they are not reset. To reset them use the system action Reset global variables.
Restart layout
Restart the current layout. Note that unlike Go to layout, this action resets all event groups to their initial activation state. Global variables keep their current value - they are not reset. To reset them use the system action Reset global variables.
Part of the answer, I'm French but I try to help