Find a string representation for a set of nice numbers (requires at least 2)
This will return unreliable results if numbers are not nice, especially
if the 1st 2 elements are equal
Radio buttons - value is index (0-based) of selected button
Usually you'll want hradio() or vradio() for horizontal
or vertical arrangements; but you may use radio() to
specify something in between.
RAISED -
Static variable in class rvl.piface.PiPanel
Set constraints on directions points may be moved
Warning: If both arguments are true,
we are saying neither coordinate can be changed; so this
has the side effect of calling setMoveable(false).