Specifies the number of characters that must appear after a hyphen during hyphenation, to prevent words from breaking too close to the end of a word. For example, entering thyaft 3 means that the word 'hyphenated' could not be broken as 'hyphenat-ed'.
Syntax
<?thyaft min ch after hyph:n?> <?thyaft>
[no parameter]
Invoke the Hyphenation - min chars after hyphen dialog box.