Constrain font on special fontsizes?

1

Hi,
I created a conceptional font which is based on a special grid.
Is there a possibility to define in the fontfile that this font is only using in special fontsizes like 7pt, 14pt, 21pt or similar?

Cheers

2

No. You can add an optical size, but naturally, any software that applies the font can ignore it.

3

Its not nice to hear, but thank you for your answer.
Than I have to write an readme and explain in which condition the font will work proper.

Cheers