SDT.SUB

SDT.SUB  is  a  CP/M-80 SUBMIT style batch process  command  file 
which  will  overlay  the standard DDT.COM,  and  create  a  new, 
enhanced form called SDT.COM.  SDT has the following enhancements 
vis-a-vis  the plain vanilla DDT. (part of the  CPM  utility set)

     1) B command creates Block of text for search.

     2) Exxxx command Explores memory for string from xxxx.

     3) Cxxxx command Changes memory with ASCII input from xxxx.

     4) Jn command Jumps to new default drive n (0=A:, etc.).

     5) V command Views directory at first match to I command.

     6) W command Where is next match.

SDT is the creation of Dr. William Parke, and is described in the 
December 1983 issue of >CHUG, the newsletter of the Capital Heath 
Users'  Group.  Inc.  (PO Box 2653,  Fairfax,  VA.,  22031).  The 
information here is reproduced with credit to Dr.  Parke, who may 
be contacted at the above address, for further information. 

The  article in the magazine included  step-by-step  instructions 
for   keying  in  the  source  for  the  modification.   My  only 
contribution  to the utility of this idea was to make up the  SUB 
file to automate the process, and save the keystrokes required. 

For an original DDT.COM crc of 34 B9,  the newly created  SDT.COM 
was  found to have a crc of 3D BA (via CRCK-42.COM).  SDT can  be 
quickly installed by EX14.

                                   Walt Jung 12/24/83
                                   BHEC RCPM (301)-661-2175