The files: 5gpA and pga_interactive use the basic format 
for inputting relations and so the pq program must be called
with the `-b' flag for these.

Those files which begin with keyword_ are examples of files 
containing presentations defined using key words i.e. the
pq program must be called with the `-k' flag.  

For all other input files the pq program should be called
with no flags.

All files beginning with pga_ are examples of usage of 
p-group generation, except that: pga_template is a 
template for creating p-group generation input files.

All input files not beginning with pga_ utilize features of
the p-quotient algorithm.
