Macro Language Reference > PIs > Maths > <?tcustr3>
  
<?tcustr3>
Description
Specifies the default rule width for scriptscriptstyle text in Maths, which is used for 2nd level sub- & superscripts, roots and 3rd level fractions.
 
This rule width setting also affects the gaps between joint sub- and superscripts, the bars over roots and the gap between the fraction bar and the numerator and denominator.
Syntax
<?tcustr3 rule3:um?>
<?tcustr3>
[no parameter]
Invoke the tcustr3 dialog box.
rule3
The width of the rule: to one decimal place.