[Gnuplot-info] minimum =?utf-8?b?eV9tYXg=?= value

[graphix <ber...@co...>]

If I do set yrange [0:], I can force the y min to be 0 and allow the
y max value to be computed by gnuplot.  Is there a way to tell gnuplot
to always use a y max value of at least 5?  So if the lines being
graphed don't have a max in excess of 5, y max will be 5.  But, if the 
lines have a y value > 5, then gnuplot dynamically determines a >5 
y max value.

Thanks