This article applies since VisUI 1.0.0

There are two flow groups.

Arranges actors in rows filling available horizontal space. Creates new rows and expands vertically as necessary. Children automatically overflow to next row when necessary.

Can be embedded in scroll pane however in that case scrolling in X direction must be disabled.

Arranges actors in single column filling available vertical space. Creates new columns and expands horizontally as necessary. Children automatically overflow to next column when necessary.

Can be embedded in scroll pane however in that case scrolling in Y direction must be disabled.