This is day 5 of the 100 days of PowerBuilder and its helping to organise PBLs. "... Establishing a uniform structure to the contents of your PBLs which applies across the applications you develop is much more important in terms of lessening the learning curve for new developers and improving maintenance activities. Most applications which are at least ten years old have a hodge-podge of PBLs loosely organized at best. Many may have had better structure but over time entropy took control, especially when the initial developers moved on to something else, and there was no longer anything other than individual discipline keeping things organized. The two types of sturctures I advocate are Object Centric and Module Centric."