Hi Tom,

re:
> Does such a command / script exsit ?

No, not currently. The part that makes this kind of complicated is that incrementing by a value of 1 could have a pretty different effect in different commands. Like nudging an angle value by 1 would make a much less noticeable effect than nudging a distance by 1. Another issue is that it would be sensitive to the overall object scale as well, like if your model is 1000 units across then nudging by 1 is a small amount and if your model is 0.1 units across nudging by 1 is a large amount.

Those are some of the reasons why I haven't attempted that yet.

It is possible to input relative values in input controls though, like if an input field currently has a value of 10 in it, you can type "+1" which will give it a value of 11.

- Michael