What aspect of a project does a circle diagram or circle notation focus on?

The circle diagram or circle notation primarily emphasizes the relationship between activities and their durations within project management. This graphical representation allows project managers to visualize how each task fits into the overall timeline of the project. It helps identify the length of time each activity will take, facilitating better planning and monitoring of progress.

Using circle notation assists in breaking down complex projects into more manageable components, enabling clearer communication about what each task entails and how long it is expected to last. This understanding is crucial for effective scheduling and ensuring that the project remains on track to meet its deadlines.