Using :load in knitr

[Mark Bower]

In an RMarkdown document, I have followed the tutorials and examples to get a Scala engine running, but that engine does not appear to recognize the Scala ":load" command:

```{r something-in-Scala, engine='scala', comment='Scala>', eval=TRUE, echo=TRUE, engine.opts='-savecompiled'}

val something = System.getenv("SOMETHING")

val somethingelse = something + " + Scala"

println("'" + something + "' is now '" + somethingelse + "'")

:load /Users/me/myClass.scala

```

The first lines work, but the last line crashes, giving the error:

    Invalid literal number :load

Thoughts on how to load this Scala.class?