Question about WinSPWW2 Unit IDs

[mikedora]

Hi,

I have recently upgraded my (very) old copy of WinSPWW2 to the 22 Feb 14 version. I notice that some - but not all - units are now showing unit IDs, where they didn't before, please see the attached screenshot.

How does this work please, why are only some units ID'd? Also, is there a way of toggling this feature on and off? I find it a bit distracting, have tried the regular "show unit ID" switch but it doesn't seem to apply here.

Thanks

Mike