#const a=1; c=0.63246;
{a} {a} {c} {90} {90} {90}
1 0 0
0 1 0
0 0 1
#const x=0.3; f="f";
{x} {x} {0} {f}
{-x} {-x} {0} {f}
{-x+1/2} {x+1/2} {1/2} {f}
{x+1/2} {-x+1/2} {1/2} {f}
#const a="a";
{0} {0} {0} {a}
{1/2} {1/2} {1/2} {a}