A flow element numbers each content element and arranges them sequentially by either rows or columns. Elements are layed out as long as there is room on the page and within the bounds specified on the flow element.
The way that content is positioned is dependant on whether any IFlowColumns exist within the flow element:
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2