Hello Jan,
the integration is primarily to have additional menu entries in Simulink pointing to Integrity and in Integrity a so called surrogate model storing a copy of the current Simulink model to be used for further tracing in Integrity (down to spec and test).
Here is a picture of the Matlab Simulink menu entries added by the integration:
The integration as such can be downloaded from our PTC Software page.
Hope this helps,
Volker
