Hi Al, Top-down and left-right refers to the way the edges of the nodes are oriented. 1) top-down: the edges that go deeper into are directed down. all nodes that are on the same level are positioned horizontally. 2) left-right: the edges that go deeper into the tree are set off to right. node son the same level are oriented vertically. The terms are used for describing graphs. If one does code the tree as text then using left right is better for ereaders with smaller screen sizes. As otherwise, you do not see much of the tree at all. This is especially, true when using smart phones as an reader. Like I mentioned using an image would seem to me to be a better route. One can see the entire tree in its entirety and zoom in for the details. regards Keith. Am 18.12.2011 um 22:33 schrieb Al Haines:
Not sure what you mean by top-down. If you have to rotate the physical book to read the table/tree, then render the table/tree as it appears with that rotation, just as you'd rotate an illustration.