rriding <b>operator==</b> without overriding <b>Equals</b>
	has no effect.
<li><p>The <b>Within</b> modifier was originally designed for use with floating point
    values only. Beginning with NUnit 2.4, comparisons of <b>DateTime</b> values
	may use a <b>TimeSpan</b> as a tolerance. Beginning with NUnit 2.4.2,
	non-float numeric comparisons may also specify a tolerance.
<li><p>Beginning with NUnit 2.4.4, float and double comparisons for which no
	tolerance is specified use a default, use the value of
	<b>G