Specifies the default text height for Maths, i.e. for displaystyle (formula) or textstyle (inline in paragraph) text. The value of this property is a percentage of the text height value for the stream set via <?th>, and hence overrides that property for the Maths text.
Syntax
<?tcusth1 height1:f?> <?tcusth1>
[no parameter]
Invoke the tcusth1 dialog box.
height1
The percentage of the text height property value: to one decimal place.