[Oberon] Import hierarchies of display modules.

[Alexander Ilin]

Hello, Jan!

> There is a small problem here. The forum needs a name and password by the looks of the russian.

  Ugh! Sorry about that, I had no idea you need to login to view the forum. So much for Oberon popularization.

> Is it possible to zip the ImportGraph tool up and send it to me privately. Then we will see where to put it

  OK, in a few moments.

> Perhaps on my github page.

  No objection from me.

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Александр