colorbar.mxy.abs(color.lim,color="red", ylab="",ylablim=FALSE)colorbar.mxy.abs is a modification of colorbar.mxy
to provide colour-bars for MXY plots of absolutes values. It is used in function
mxy.abs.plot.
Further details can be found at colorbar.mxy. mxy.abs.plot, colorbar.mxy, colorbar.sig