[gradsusr] embed newline characters in strings

[Steven Weiss]

Hi, 

I'd like a function to return multiple lines for use with sublin. I'd struggling to embed a newline character into a string.

e.g.

rc = myfunc()
var1 = sublin(rc,1)
var2 = sublin(rc,2)

function myfunc()
myvar = "hello\r\nWorld"

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