11.   Defining such limits is the essence of presidential leadership.

12.   Defining the limits of what he could actually show in a theater was a challenge, Lyne admits.

13.   For example, they define limits on gift giving in the recruitment of senior citizens to sign up with a health plan.

14.   In our home, it was mom who doled out the beets and dad who defined our limits and delivered the discipline when we overstepped our boundaries.

15.   It helps you define the limits.

16.   It overflows with lurid, posturing characters who define the limits of the small world in which they live.

17.   One of the thorniest issues facing the conference is defining the limits of industry self-regulation.

18.   Science has done a singularly poor job when it has sought to define limits on human potential.

19.   Specific directives from the ministry have become less common in recent years, editors say, making those limits hard to define.

20.   Still, most companies have not yet made a systematic effort to define the limits of monitoring.