By default, the Rover IDX search panel is responsive - which means it will try to display horizontally.  But if there is not enough space, it will display vertically.

Thie parameters allows you to force the displayed Rover IDX search panel to be oriented vertically (meant for sidebar or narrow display) or horizontally.

Choices are:

  • vertical
  • horizontal

The Rover Quick Search widget sets this parameter to "vertical".