Text file extender for all Z80 machines appends an input line to 
a new or existing ASCII file, allows the ZCPR3 "du:" and "dir:" 
forms.  Great for Z-System scripts, as it can "keep notes" on 
what happened during unattended batch runs.  Version 1.4 still 
works with CP/M Plus, but uses SYSLIB file I/O and can extend 
empty files as well as files with no EOF byte in their last 
record.  Now includes a safe Type 4 for Z34-compatible systems.