Increase/decrease font size by amount other than 10%

[ei14]

Is your feature request related to a problem? Please describe.

I use a bitmap font. I set the font size so that each bitmap pixel corresponds to a 2x2 pixel region on my screen. When I start increasing / decreasing the font size, everything gets blurry.

I'd like to increase / decrease the font size exactly by a factor of 2. I can ALMOST do this by performing the size change action 7 times (because 1.1^7 = 1.95, approximately 2), but the pixels on my bitmap font don't line up quite right.

Describe the solution you'd like

An action that takes a scale factor as a numerical argument, and increases / decreases font size by the factor.

[nfejzic]

It would be great if we could have the option to use one of possible units, for example scale by points, or multiplier, etc...