Hey all,
Been writing a tool for work and been trying to stay along the same design principle with max ui and was trying to replicate something seen in the render to texture window. You can scroll up and down the subrollouts but the render, unwrap only and close is always at the bottom. Am i wrong in assuming this is a rollout floater and not a subrollout? Coming from Maya so not to fluent in maxscript yet. Wish the UI code was accessible 
I attached an image that probably better explains what Im talking about. Thanks 
EDIT: So I think its a subrollout. Any ideas of the advantages of subrollouts vs rollout floaters? Guessing the subrollout provide better positioning abilities.