Demos the use of DOS packets, finding the Window pointer and ConUnit
pointer of the CLI window, toggling Raw mode, getting cursor position and
limits from the ConUnit, and ESC-sequence cursor positioning.  

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 7171   13684  52.4% -lh5- ac7f Mar  1  1987 ConPackets/conpackets
[generic]                 1793    4513  39.7% -lh5- 7a09 Mar  1  1987 ConPackets/conpackets.c
[generic]                  826    1642  50.3% -lh5- ea05 Mar  1  1987 ConPackets/POSTER
[generic]                  311     517  60.2% -lh5- bd99 Mar  1  1987 ConPackets/README
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files   10101   20356  49.6%            Mar  1  1987