#2 Another item in the Font Size box

[Lilith River]

Although it is nice to be able to control exactly what
font size is being used for the Character Grid, for
many people automatic control would be fine.

I would like to see an <auto> item in the font size
list, which, when selected, automatically sizes
fonts to fit in their respective grid. I realize that
each individual glyph may exceed the baseline
dimensions, etc. and could get cut off, but for basic
stuff it would be fine.