I just noticed that working with folders I miss a small feature which would give me the chance to add a comment to a folder. I could then add to this folder a comment like "Host Only, 192.168.117.0" so that I see which internal network I use.
Sanme for virtual machines itself. At least I could not see it. I know that comments feature exist in vsphere. And it would only take little place in the XML files.
Happy New Year