To view the critical path of a project and its subprojects:
select the project in the Summary view
select the menu option Tools → Pert chart/Critical path view
the critical path view shown below comes up
the tasks on the critical path are framed in red
the link color shows the type of link
the view can be printed from the Options menu
to view the PERT chart, select Options → Pert Chart , as shown below
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