dear Plots wizards—how do I set the font (size) of annotations?

```
using Plots
y= 2:20; x=2:20; f(x,y)=x+y;
annotations= [ (x[i],y[j],round(f(x[i],y[j]),digits=2)) for i=1:length(x) for j=1:length(y)];
plot( ; annotations= annotations, xlim=[first(x)-1,last(x)+1], ylim=[first(y)-1,last(y)+1] )
```