h><th>Operation</th></tr>
<tr><td>Text.Contains( string )<br>Text.DoesNotContain( string )</td><td>SubstringConstraint( string )</td></td><td>tests for a substring</td></tr>
<tr><td>Text.StartsWith( string )<br>Text.DoesNotStartWith( string )</td><td>StartsWithConstraint( string )</td></td><td>tests for an initial string</td></tr>
<tr><td>Text.EndsWith( string )<br>Text.DoesNotEndWith( string )</td><td>EndsWithConstraint( string )</td></td><td>tests for an ending string</td></tr>
<tr><td>Text.Matches( strin