[plt-scheme] How to get DrScheme to custom render text values in the editor?

From: Grant Rettke (grettke at acm.org)
Date: Sun Sep 30 19:40:20 EDT 2007

I printed some sourcecode out for some folks, and the 'λ' just gets
rendered a garbage

So, I would like to make DrScheme display a 'λ' in the editor whenever
it sees the whole world 'lambda'. I will use 'lambda' instead.

How can I make DrScheme do this?

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