[R] percent sign in plot annotation

[Bettina Gruen]

Martin Keller-Ressel wrote:
> Hello,
> 
> I would like to annotate a graph with the expression 'alpha = 5%' (the  
> alpha should be displayed as the greek letter).
> I tried
> 
>> text(1,1,expression(alpha == 5%))

Try
text(1,1,expression(alpha == 5*"%"))

Best,
Bettina