Render items of selectOneRadio in multiple columns

[Jan Bols]

I'm  using an x:selectOneRadio component. I want the different items to be  
rendered in 2 columns instead of 1 row or 1 column. The layout attribute  
of this component only allows for the values "pageDirection" and  
"lineDirection" which deosn't allow displaying items in 2 columns. Is  
there another solution or do I have to code my own custom component?

Jan