Script to print the Begning Point,Ending point and Slack

 To report the beging Point endpoint and slack for the particular timing path groups

set   timing_paths  [report_timing -max_paths 1000 -max_slack 0 -collection -path_group r2r]                

        foreach_in_collection r $rpt { 

             puts "Endpoint: [get_property [get_property $r capturing_point] hierarchical_name] \t 

                     Startpoint: [get_property [get_property $r launching_point] hierarchical_name] \t 

                      Slack:   [get_property $r slack]" }