ZDB (Z-Database) is a small (7K), simple but very fast name and 
address file with label and envelope printing output, sorting 
by last and first name or by zipcode, and fast search.  Z-System 
dependent, it uses some of the graphics capabilities of VLIB4.  
Can make use of a clock for automatic dating of entries.  
WordStar-style editing keys for data entry and updating.  New 
output options for labels.  Written in Z80 assembler and 
developed with ZMAC and ZML, using the V4LIBS.  Should be 
compatible with almost any Z80 system running Z-System.  Written 
by Joe Mortensen.  11/23/90