/usr/bin/orca-dm-wrapper is in gnome-orca 3.14.0-4+deb8u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 | #!/bin/sh
/usr/lib/at-spi2-core/at-spi-bus-launcher --launch-immediately &
orca --replace --no-setup --disable splash-window &
exec $*
|