[Jprogramming] Displaying trees - J Wiki/Essays/Tree Sum

[Fraser Jackson]

The very simple display of small trees illustrated in the Introduction is 
used several times in this essay, but I have been unable to find anywhere 
that a function to produce this display is given.  I wonder if Roger has a 
very useful gem up his sleeve and would be prepared to share it?

I would certainly make extensive use of it..  Many thanks,
Fraser


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