##Shapes and around
##shape around corner bevel oval ellipse content_margin larger
##If you want the around block to be somewhat larger than its content, use the 'content_margin' attribute.
use label="";
col A {a, b, c, d;}
col B {a, b, c, d;}
col C {a, b, c, d;}
use line.color=red;
around A.a+A.b *oval;
around B.c+C.d box [line.corner=bevel, 
                    content_margin=10];
