A container that arranges its child controls horizontally or vertically and wraps them around at the borders. This is similar to how text in a book wraps around when no more words can fit on a line.
If [code]true[/code], reverses fill direction. Horizontal [FlowContainer]s will fill rows bottom to top, vertical [FlowContainer]s will fill columns right to left.
When using a vertical [FlowContainer] with a right to left [member Control.layout_direction], columns will fill left to right instead.
The child controls will be arranged at the beginning of the container, i.e. top if orientation is vertical, left if orientation is horizontal (right for RTL layout).
The child controls will be arranged at the end of the container, i.e. bottom if orientation is vertical, right if orientation is horizontal (left for RTL layout).