##Align to multiple blocks
##below rightof leftof above alignment modifier
##You can use a combination of blocks to align to: their bounding box will be used. This is especially useful to align to center: 'C' is just between (and below) of 'A' and 'B', for example.
box A;
box B;
below A+B box C;
A,B->C;
rightof A+B+C box D;
B,C->D;
above B+C+D box E;
A,B,C,D->E;
