What does the form layout option for container do?

[HankFay]

In a custom section, assuming I have the following code:

oSection = createobject("oSection", "section");
oSection.addobject("oContMain","container");
oContMain.layout = "grid";
oContMain.spacing = 50;
oContMain.addobject("oContPOInfo","container",0,0,1,1);
oContMain.layout = "form";

What behavior should I expect from the layout? I can't get it to display a label, or a form item, so I'm obviously missing something.

thanks,

Hank