[NTG-context] Blackboard signs for set of rationals (Q) and reals (R)?

Gerben Wierda gerben.wierda at rna.nl
Sat Aug 2 15:14:41 CEST 2014

Just a simple question I could not find the answer for in the docs.

What do I need to get the blackboard style (double lines) characters for R (the set of real numbers) and Q (the set of rational numbers) in a ConTeXt document?


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