To limit the number of responses returned, you need to do two things:

1. When compiling the server, set the "person limit", in the file
qi/configs/defaults.  Look for the line: 

"PersonLimit","100",                  # max # of people to return

and set the value (100 in this example) to the desired number of entries.

2. For all records you want to limit, you must set the "type" field to
"person", or "p".  When you are building the database, just include data
for the type field (field 4) with each person's entry (see the example in
section 1.3).