Many tasks within Abaqus/CAE are broken into step-by-step procedures. For example, creating an arc in the Sketcher is a three-step procedure:
Pick the center point for the arc.
Pick the start point.
Pick the end point.
Abaqus/CAE displays each step of a procedure in the prompt area near the bottom of the main window so that you do not need to remember all the steps and their order.