Does allow a batch-script to check whether a given public screen
is known to the system.
 - May lock the screen.
 - Does offer default values.
 - Source included.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  176     266  66.2% -lh5- 7445 Sep  2  1992 scoptions
[generic]                 6450   10516  61.3% -lh5- d1cb Sep  2  1992 tstpubscr
[generic]                 2985    8670  34.4% -lh5- b90c Sep  2  1992 TstPubScr.c
[generic]                 1877    4550  41.3% -lh5- 5867 Sep  2  1992 tstpubscr.doc
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files   11488   24002  47.9%            Mar 10  1995