The graphic convention for showing the dependency relationship between two tasks in the Schedule Chart.
                  
The dependency relationships among all tasks and milestones in a project, represented by dependency lines connecting boxes in the Schedule Chart.
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A task whose slipping would cause tasks dependent on it to slip beyond their Latest Start, or a task with slack time equal to or less than a threshold you set.
            
A date you set as the Latest Finish for the final task or milestone in a project.
A relationship between two tasks (or milestones) in a project, in which the work on one task cannot begin until the work on the other task has begun or finished.