// for loops on a list of expressions
var i;
for i in 1 do print i, " "; end; println;
for i in 1,3,46,8 do print i, " "; end; println;
for i in {1,3,46,8} do print i, " "; end; println;
for i in -1,{-2,-3,-4},{-5,-6},-10 do print i, " "; end; println;