<?tcustx12>
Description
Sets the value of big op spacing 4 for Maths limits: the space between the bottom of an operator and the bottom of a subscript character. This value is set as a percentage of the current height.
Syntax
<?tcustx12 big op spacing4:f?>
<?tcustx12>
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[no parameter]
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Invoke the tcustx12 dialog box.
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big op spacing4
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The percentage of the current height: to one decimal place.
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Additional Information
Big op spacing 4 is one of the measures used to decide the positioning of a subscript limit below an operator, particularly when subscript characters are different sizes: compare the total size of x (no descender) and y (descender below baseline). The ideal outcome is for the baselines of the characters to be aligned vertically, and to this end the positioning of the baseline of the subscript character is decided using the greater value of the following two:
• Value of big op spacing 2
• Value of big op spacing 4 minus the character size of the superscript
This comparison ensures that the baselines of the subscript characters are aligned vertically whilst always maintaining a minimum amount of space between the operator and the subscript character.