This is useful …

I notice that with a cursor in a line that is arithmetic (or JavaScript) we can produce a calculated child node automatically with ⌘⇧R (`Edit > Run Script`

)

(and then add something to that result for another ⌘⇧R and a further calculation based on it)

```
Quick inline calculations
2 + 2
4
Math.sqrt(5)
2.23606797749979 - 1
1.2360679774997898 / 2
0.6180339887498949 + 1
1.618033988749895
```