R version 2.12.0 (2010-10-15)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(56,55,54,52,72,71,56,46,47,47,48,50,44,38,33,33,52,54,39,22,31,31,38,42,41,31,36,34,51,47,31,19,30,33,36,40,32,25,28,29,55,55,40,38,44,41,49,59,61,47,43,39,66,68,63,68,67,59,68,78,82,70,62,68,94,102,100,104,103,93,110,114,120,102,95,103,122,139,135,135,137,130,148,148,145,128,131,133,146,163,151,157,152,149,172,167,160,150,160,165,171,179,171,176,170,169,194,196,188,174,186,191,197,206,197,204,201,190,213,213)
> par4 = '12'
> par3 = 'Deze reeks geeft de omzet van product X in euro's per maand weer'
Error: unexpected symbol in "par3 = 'Deze reeks geeft de omzet van product X in euro's"
Execution halted