Ladder programs in modules - cannot find any info

[mike@synoptic]

What is the relationship to ladder programs and regions in a module? 
Is there a main ladder program that runs and I need to call all the rest including regions separately?
Do all the Ladder  programs in every module run without any calls? 
Do I need to call the main ladder function something special so that UniLogic knows to run it first? 

[s.pratt]

Hello, thank you for using our Unitronics Forum,

The main ladder function which will run upon start-up will be the routine in bold.  Your subroutines will be the ladder functions not in bold and will only run when called upon from the main routine or another subroutine.

If you wish to change the main routine to be a different ladder function, you can right click on the routine and select "Set as Main Function".

Let us know if this helps.