##Block alignment & label orientation
##block alignment rightof leftof below above pixel offset label orientation side upside down rotate
##Use the 'label.orient' attribute to make a label be read from left or right side or upside-down.##Use the 'rightof', 'leftof', 'above' or 'below' alignment modifiers before a block definition to influence where it is placed. You can also use a pixel offset afterwards.
box A: Very large block 
    [label.orient=left];
rightof A+10 top box: +10 and top;
rightof A+20 box: +20 and center;
leftof A-30 bottom box: -30 and bottom;