I need to group portions of a tree with boxes, and additionally label them, e.g. put "W1" on the side of the box, or in the top right corner of the box. The result I want to achieve is somewhat ...
Is there a way to give every edge on the left the same label up to a specific level (I don't want labels on my leaf nodes). I want to build a Huffman-Code, so it would be nice to have every left edge ...