Reorg multiple sections consolidate what you can/can't do to the schema into one section and move to the top of the Tracker Schema section.. Also outline how you *can* change the type of a property. In the "Classes and Properties - creating a new information store section", add new Method subsection after Properties subsection. Place all 4 method sections in there moving them from below. Move IssueClass section before FileClass section because IssueClass incorporates links to FileClass not the other way around. Fix indexes.

[Unit]
Description=Roundup Server - roundup

[Service]
User=roundup
WorkingDirectory=/path/to/roundup/trackers/roundup
SyslogIdentifier=roundup-server-roundup
ExecStart=/path/to/gunicorn -b unix:///var/run/roundup/roundup.sock wsgi -w 4 --preload --max-requests 128 --max-requests-jitter 32 --timeout 60 --graceful-timeout 60 --access-logfile - --error-logfile
ExecReload=/bin/kill -HUP $MAINPID
ExecStop = /bin/kill -s TERM $MAINPID
KillMode=mixed
Restart=on-failure
RestartSec=15s

[Install]
WantedBy=multi-user.target