Spread sweave command through multiple lines

Question

How can I spread this sweave line in several (to avoid 80 char limit complain in bioconductor) ?

<<echo=F, fig.align='center', fig.cap='some plot with long label', fig.height=4, fig.width=10>>=

So I tried this..

<<echo=F,
 fig.align='center',
 fig.cap='some plot with long label',
 fig.height=4,
 fig.width=10>>=

But it doesnt work...