It is desirable to add to the housing opening to access the M-register.
@Gouwa, you can raise the issue of mandatory add a microswitch on the M-register ? It is very difficult to close the contacts and not to damage surrounding components. I know that many users have this problem. Add the microswitch at least in the maximum version. It’s not will significantly increase the price but will significantly simplify the handling of the M-register. The maximum version VIM2 bought primarily for serious work on the development of programs, where you often have to debug your code (and use M-register), it is necessary to facilitate users using M-register.