Re: changing feta23 fonts

[darkijah]

I just don't understand... one page says:

Automatic font weight at different sizes
The Emmentaler font provides the set of Feta musical glyphs in eight 
different sizes; each one tuned for a different staff size. The smaller 
the glyph size, the “heavier” it becomes, so as to match the relatively 
thicker staff lines. Recommended glyphs sizes are listed in the 
following table:

font name       staff height (pt)       staff height (mm)       use
feta11  11.22   3.9     pocket scores
feta13  12.60   4.4
feta14  14.14   5.0
feta16  15.87   5.6
feta18  17.82   6.3     song books
feta20  20      7.0     standard parts
feta23  22.45   7.9
feta26  25.2    8.9

and another says

The Feta font provides musical symbols at eight different sizes. Each 
font is tuned for a different staff size: at a smaller size the font 
becomes heavier, to match the relatively heavier staff lines. The 
recommended font sizes are listed in the following table:

font name

staff height (pt)

staff height (mm)

use

feta11

11.22

3.9

pocket scores

feta13

12.60

4.4

feta14

14.14

5.0

feta16

15.87

5.6

feta18

17.82

6.3

song books

feta20

20

7.0

standard parts

feta23

22.45

7.9

feta26

25.2

8.9


Is it something I need to change with the font size changing or does it 
do it automatically? I'm so confused.

Dearly regards
- Darkijah