I have to go to work, so I'll be short.

The heirarchy editor docks. The Python buttons dock. Everything that is non-modal docks.

There are multiple nestable docking zones - left, top, right, bottom.

Docking means it "snaps" into place and lines up. When multiple items are stacked in the same dock, they adjust their size so their edges line up.

Floating means no snap, no automatic sizing - it is what you say it is. Panels in floating mode can overlap, and come to the top or go to the back, just like windows in ... Windows.

If you use a shortcut key to hide a docked panel, other panels sharing the same dock grow to fill the space in the same dock. If you hide the last panel in a dock, the dock disappears, making all other dock zones become bigger.

Thus if everything is docked and you hide all panels except preview, then preview becomes full screen.

If you re-show another panel, preview will shrink to make room for the dock zone that re-appears.

Materials are always visible now - no need to go into the material room. You can drag materials and material collections into the preview window onto props and figures. You can double click material collections to apply to the currently selected item.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)