This schema describes various options that control zdctl.py and zdrun.py. zdrun.py is the "daemon process manager"; it runs a subprocess in the background and restarts it when it crashes. zdctl.py is the user interface to zdrun.py; it can tell zdrun.py to start, stop or restart the subprocess, send it a signal, etc. There are two sections: <runner> defines options unique zdctl.py and zdrun.py, and <eventlog> defines a standard event logging section used by zdrun.py. More information about zdctl.py and zdrun.py can be found in the file Doc/zdctl.txt. This all is specific to Unix/Linux.