WORKDIR parameter   ==  WORKDIR=dirPath
                    --  default: WORKDIR='${VARDIR}/work/${PORT}'

If WORKDIR is not accessible, or if WORKDIR is not explicitly specified when -vv option is given, then current directory (of invoker of this DeleGate) will be used as WORKDIR.

ACTDIR parameter    ==  ACTDIR=dirPath
TMPDIR parameter    ==  TMPDIR=dirPath
PIDFILE parameter   ==  PIDFILE=fileName
                    --  default: ACTDIR='${DGROOT}/act'
                    --  default: TMPDIR=system dependent
                    --  default: PIDFILE='${ACTDIR}/pid/${PORT}'

Information about currently active servers are placed at ACTDIR. Those are temporary files which are made on invocation of a DeleGate server and are removed at its termination.