[magick-users] character spacing

[Leonardo Sanvitale]

I have to show a text using non system text. For doing so, I had to
transform the text to image.
The problem I am having is that in the design of the page I am doing,
the characters have a given space between each. In the Adobe the space
is set with the option tracking between characters, but i can't find
something similar with ImageMagick!

Does anyone knows how to do it?
thanks in advance