  The Instrument Control Software of SOXS (Son Of X-Shooter), the forthcoming
spectrograph for the ESO New Technology Telescope at the La Silla Observatory,
has reached a mature state of development and is approaching the crucial
Preliminary Acceptance in Europe phase. Now that all the subsystems have been
integrated in the laboratories of the Padova Astronomical Observatory, the team
operates for testing purposes with the whole instrument at both engineering and
scientific level. These activities will make use of a set of software
peculiarities that will be discussed in this contribution. In particular, we
focus on the synoptic panel, the co-rotator system special device, on the
Active Flexure Compensation system which controls two separate piezo tip-tilt
devices.
