@@ -66,7 +66,7 @@ or
```swift
var i = 1
standardinput.lines() |> map {line in "line \(i++): \(line)\n"} |> writeTo(standardoutput)
standardinput.lines() |> map {line in "line \(i++): \(line)\n"} |>> standardoutput
```
Launch with e.g. `ls | print_linenumbers.swift`
The note is not visible to the blocked user.