PCAC> SET DATAFILE [PING]TEST

      This command specifies that the performance or coverage data be
      written to a new file called [PING]TEST.PCA.

  PCAA> SET DATAFILE [PING]TEST

      This command specifies that performance or coverage data should
      be taken from file [PING]TEST.PCA by subsequent PLOT, TABULATE,
      and LIST commands.

  PCAC> SET DATAFILE/APPEND [PING]OLDTEST

      This command specifies that the performance or coverage data be
      appended to the existing data file [PING]OLDTEST.PCA.

  PCAC> SET DATAFILE/SHAREABLE=(MYSHR) SHRDATA

      This command specifies that the performance of shareable image
      MYSHR be measured. The name of the data file is SHRDATA.PCA.