Library /sys$common/syshlp/pca$help.hlb SHOW, EVENT, Examples  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  PCAC> SHOW EVENT
  Events
    Set Event COMPUTE PRIMES\OPENIN\%LINE 22

      This command shows that an event marker for event COMPUTE is
      recorded in the performance data file each time line 22 in
      routine OPENIN is executed.