Clarify something about the GWX manual...

[rifleman13]

I know to RTFM but the GWX 2.1 Manual in English seems to be incomplete...

Appendix C in the manual states:

SH3 Commander allows time-variant changes beyond those available in stock Silent Hunter III. The GWX website (http://gwx.mysite.orange.co.uk) has the following SH3 Commander options that are compatible with GWX:
• In work

And what follows a blank page then on to Appendix D...

In that respect, what does "In work" mean?

Thanks for the any future replies...