Specifies the text height for scscscstyle text in Maths, which is used for used for 3rd level sub- & superscripts and 4th level fractions. The height is given as a percentage of the text height set for displaystyle and textstyle text styles via <?tcusth1>.
Syntax
<?tcusth4 height4:f?> <?tcusth4>
[no parameter]
Invoke the tcsuth4 dialog box.
height4
The percentage of the <?tcusth1> property value: to one decimal place.