Use the 'FLIP_HORIZONTAL_ALL' plugin to flip the coordinates of the control points of a surface.

Click the menu icon to perform this plugin.

After the plugin is selected, select the required orthogonal projection view tab. Then click a control point of the surface who's coordinates are to be flipped.

When using the 'XY' or 'XZ' orthogonal views, the X coordinates will be flipped. When using the 'YZ' orthogonal view, the Y coordinates will be flipped.

Click the menu item to disable the plugin mode.

This plugin is undo-able.

For the dedicated staff at Hammersmith Hospital.