Start Corner and Start Axis

The Start Corner property determines where the very first child in the Hierarchy will be placed. There are four choices for the Start Corner property, as shown:

The Start Axis property determines where all the other children will be placed relative to the first child. There are two options, as follows:

A Start Axis property set to Horizontal means that the children will be laid out, starting with the first child, in a horizontal fashion. If the Start Corner is one of the Left options, the children will be placed from left to right. If the Start Corner is one of the Right options, the children will be placed from right to left. Once the new row is filled, it will continue to the next row and will restart on the same side as the Start Corner. If the Start Corner is one of the Upper options, the rows will continue downward. If the Start Corner is one of the Lower options, the rows will continue upward.

The following screenshot demonstrates the flow of the children, with a Horizontal Start Axis based on the different Start Corner options:

A Start Axis property set to Vertical means that the children will be laid out starting with the first child and then in a vertical fashion. Whether the children will be placed from top to bottom or from bottom to top is determined in the same way as it is when this property is set to Horizontal, based on the position of the Start Corner. Then, when a column is filled, the children will be placed from left to right or from right to left based on the position of the Start Corner.

The following screenshot demonstrates the flow of the children, with a Vertical Start Axis based on the different Start Corner options: