Relay contacts should indicate whether they are NC or NO

[pjht]

As the title says. If you have a contact linked to a relay that's far away, its not obvious at a glance whether it's NC or NO without opening the properties dialog, which makes circuits harder to understand. Maybe draw a bar over the linked relay name to indicate an NC contact? There's lots of symbols in use for relay contacts, but that seems like the easiest way to do it.