This functionality is supported only if you are using the Open Agent.
For example, you might want to ignore container classes to streamline your test cases.
To suppress specific controls:
If the text box already contains classes, add the new classes to the end of the list. Separate the classes with a comma. For example, to ignore both the AOL Toolbar and the _AOL_Toolbar class, type AOL Toolbar, _AOL_Toolbar into the text box.
The OPT_TRANSPARENT_CLASSES option is set to true for these classes.