Direction
Use pam-Grid-Control="direction:[row|row-reverse|column|column-reverse]"
to control the direction of the grid.
Column 1
Column 1
Column 1
Markup
<div pam-Grid pam-Grid-Control="direction:column">
<div pam-Unit="1-3">
<div pam-Unit-Test>Column 1</div>
</div>
<div pam-Unit="1-3">
<div pam-Unit-Test>Column 1</div>
</div>
<div pam-Unit="1-3">
<div pam-Unit-Test>Column 1</div>
</div>
</div>