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$ perl -MO=Concise,-exec -e'time();' 1 <0> enter ... 3 <0> time[t1] v 4 <@> leave[1 ref] vKP/REFC -e syntax OK
$ perl -MO=Concise,-exec -e'timex();' 1 <0> enter ... 5 <1> entersub[t1] vKS/TARG,1 6 <@> leave[1 ref] vKP/REFC -e syntax OK