settextrows
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The settextrows function specifies the number of screen rows to be
used in text modes.
If the constant $MAXTEXTROWS is specified for the <rows> argument,
the function will choose the maximum number of rows available. In
text modes, this is 50 rows on VGA, 43 on EGA, and 25 on others. In
graphics modes that support 30 or 60 rows, $MAXTEXTROWS specifies
60 rows.
Return Value
This function returns the numbers of rows set. The function returns
0 if an error occurrs.
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