ZDT 1.0
                  Z-System Day Timer/Scheduler

                       Joseph I. Mortensen
                         August 4, 1991

ZDT is the Z-System Day Timer and Personal Scheduler.  Much of 
the code derives from my ZDB (Z-System Database).  The 
similarities will be obvious to those who have used ZDB.  Like 
ZDB, ZDT requires ZCPR 3.0 or higher, VLIB4+ and extended 
graphics TCAP.  ZCPR 3.0 users will need to install the Z3 
environment address at 109h.  ZDT in its present state is 64 
records, requiring only 8K on disk.

What does ZDT do?  At startup it checks for Z-System and looks 
for a real-time clock.  If no clock module is found, it requests 
manual date input.  ZDT takes the date from clock or from manual 
input, generates a calendar for the month, checks the data file 
for the existence of a record for the day, and displays the day's 
schedule, if any.  It can be put in the NZCOM startup alias 
STARTZCM so that whenever you start your computer, ZDT will 
automatically run and present the day's schedule.

The screen display includes the month's calendar and lines for 4 
morning appointments, one for lunch, 4 in the afternoon, one for 
the evening, a long memo line, and 5 lines for a to do list.  The 
current day is highlighted in the calendar display on systems 
with this capability.  Otherwise the current day has a '<' beside 
it.

Indexing of existing records is by date in BCD YYMMDD form.  With 
each addition of a new record the index is sorted (a la ZDB).

The main menu provides for movement forward and backward by one 
day, one week, or one month, (using WordStar-like ^S/^D, ^E/X^, 
and ^R/^C commands respectively).  With each move forward or 
backward ZDT checks for the existence of a record for that day 
and displays it if there is one.  Two commands not on the main 
menu are ^T to go immediately to the present day and ^\ to 
restore screen and display to startup condition.

Other commands are the following:  > or . = display the next day 
for which there is any data on file;  < or , = display the 
nearest previous day for which there is any data on file;  T = 
display the earliest day for which there is a record in the file; 
B = display the latest day for which there is a record in the 
file.

A Go To command takes the user directly to any given day of any 
year.  This operation may be aborted with ^C.

The Edit command is used to enter data for a new record or modify 
an existing one.  The editor is identical to the one in ZDB with 
a fairly full complement of WordStar-like editing commands.  
Terminal arrow keys (if present in TCAP) are intercepted and 
interpreted as ^E,^X,^S,^D in editor mode.  ^Z moves the cursor 
directly to the memo line, saving a lot of tabbing.

The Find command works exactly like the Find in ZDB.  It will 
locate any string in any field in any record -- very useful for 
trying to remember when the appointment with Mr. Grapfenstein was 
set.

An archive command (A) allows for writing all records prior to a 
given date to an archive file (ZDTARC.DTA), while purging them 
from the current file.  This is a convenient way to save all past 
records without having to deal with an ever growing data file.  
The original, unarchived file is saved as ZDTBAK.DTA.

The print command sends the schedule for any day to the printer.  
Printer initialization and reset strings are at 123h and 12eh 
respectively.  The first byte of each should be a length byte.  
There's room for 10 bytes (plus length byte) for initialization 
and 5 (plus length byte) for exiting the printing.

Please send your comments, suggestions, gripes, and report any 
bugs to me.  CFG and HLP files are also available.

Joe Mortensen
4214 Chelsea Ct.
Midland, MI 48640
Voice 517-835-6923

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