PCAA> EXTRACT SRC

      This command writes all the lines in display SRC into file
      PCA.TXT.

  PCAA> EXTRACT/APPEND OUT [STEVE.WORK]MYFILE

      This command appends all the lines in display OUT to the end of
      file [STEVE.WORK]MYFILE.TXT.

  PCAA> EXTRACT/SCREEN_LAYOUT

      This command writes the PCA commands needed to reconstruct the
      screen into file PCA.PCAA.