OptionalcontainerAlign to the container's edges + center. Default true.
OptionalcontainerAlso emit inset guide lines this many px inside the container edges
(e.g. a content margin). Default undefined (no inset lines).
OptionalfloatsAlign to the other floating groups' edges + centers. Default true.
OptionalsplittersAlign to the underlying grid's splitter (sash) positions. Default
false.
Which alignment sources Smart Guides snaps a dragged floating group to.