R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(1.58,1.59,1.6,1.6,1.61,1.61,1.61,1.62,1.63,1.63,1.64,1.64,1.64,1.64,1.64,1.65,1.65,1.65,1.65,1.65,1.66,1.66,1.67,1.68,1.68,1.68,1.68,1.69,1.7,1.7,1.71,1.72,1.73,1.74,1.74,1.75,1.75,1.75,1.76,1.79,1.83,1.84,1.85,1.87,1.87,1.87,1.88,1.88,1.88,1.88,1.89,1.89,1.89,1.9,1.89,1.89,1.89,1.89,1.89,1.89)
> par3 = 'Euro's per eenheid'
Error: unexpected symbol in "par3 = 'Euro's"
Execution halted