Use this field to restrict the set of tests to be run based on keywords associated with tests in the test suite.

In the text field, construct a boolean expression, built up from keywords and the operators "&" (and), "!" (not), "|" (or), and "( )" (parentheses for grouping). Keywords stand as boolean predicates that are true if, and only if, the keyword is present in the test being considered. A test is accepted if the overall value of the expression is true; all other tests are rejected by the restriction.

Examples:

Imagine a fictional test suite that uses the keyword "interactive" to identify tests that require human interaction, and uses "color" to identify tests that require a color display:

Enter the following expression to only execute tests with the "interactive" keyword:

`interactive`

Enter the following expression to only execute tests with both the "interactive" and "color" keywords:

`color&interactive`

Enter the following expression to only execute tests with the "color" keyword that do not also contain the "interactive" keyword.

`color&!interactive`