[sldev] Questions about UI and component positioning

[Ryan Kaskel]

I am messing around with the source code and wanted to clarify some 
things about UI component's positioning. What is the best way to 
position things? I noticed there is bottom_delta and bottom...first, 
what are these coordinates relative to? The entire window or just the 
"world frame" (sorry if these are vague)? Is bottom_delta the difference 
from the top and bottom the absolute position from the bottom? Is there 
no way to automatically "pack" the widgets?

Thanks for your help!
Epilort Byrne (Ryan)