A ZCPR3 utility that displays the command tail as parsed by the 
command processor.  Both the default and alternate (secondary) file 
control blocks are displayed as a hexadecimal dump and in ASCII, as is 
the complete tail in the default DMA buffer.  This program can be 
useful for anyone exploring programming in the ZCPR3 environment.  I 
found it invaluable when I wrote it several years ago.