help on spplot

Dear all,

I am trying to map fish densities in different years from a 
SpatialPointsDataFrame. I managed to change the legend labels using 
lengendEntries and the their position using key.space, but not the font 
size. I have looked in help pages and in the books ASDAR and Lattice, 
and tried to use colorkey=list(cex=.5) but didn't work. Could anybody 
give me a hint on how to do this?

Thanks in advance.

Cristina

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Cristina Silva
INRB/L-IPIMAR
Unidade de Recursos Marinhos e Sustentabilidade
Av. de Bras??lia, 1449-006 Lisboa
Portugal
Tel.: 351 21 3027096
Fax: 351 21 3015948
csilva at ipimar.pt