Revit :: How To Make Dimension Text Smaller

I would like to make the dimension text smaller so that the information doesn't become so crowded. I notice that the dimensions are written like 12' - 10 3/4", with a space between the ' and the - and a space between the - and the 10, rather than 12'-10 3/4", like an old-fashioned person like me would write. Is there a way to control that? I looked into the dimension edit dialog box & couldn't see a way. AutoCAD writes them like I like.