Provide a better hint re. the necessary input for "Contains Assertions" with reg-exp. enabled.

You may want to provide a corresponding hint in the check-box's text (or at least its hover-text), because that's not exactly intuitive. Without the reg-exp checkbox being ticket one needs to provide a substring only that has to be contained somewhere in the response. With the check box ticked, it needs to match the entire response.

Please make that difference more explicit!

Background here:

Re: Contains assertion with option "Use Token as regular expression" not working