These actions either set, or fetch (get) the value of an attribute.
Such operators are:
- $AttributeName (reference to attribute value)
- Color.blue
- Color.brightness
- Color.green
- Color.hue
- Color.red
- Color.saturation
- compositeFor("item"):count
- compositeFor("item"):kind
- compositeFor("item"):name
- compositeFor("item"):role("theRole")
- compositeFor("item"):roles
- Date.day
- Date.hour
- Date.minute
- Date.month
- Date.second
- Date.week()
- Date.weekday
- Date.year
- Interval.day
- Interval.hour
- Interval.minute
- Interval.second
- List.unique
- List/Set.count
- List/Set.empty
- List/Set.max
- List/set.min
- List/Set.size
- String.empty
- String.paragraphCount
- String.size
- var