Helper functions for write2

Helper functions for write2.

verbatim(...)

code.chunk(..., chunk.opts = "r")

Arguments

...	For verbatim, objects to print out monospaced (as if in the terminal). For code.chunk, either expressions or single character strings to paste into the code chunk.
chunk.opts	A single character string giving the code chunk options. Make sure to specify the engine!

Details

The "verbatim" class is to tell write2 to print the object inside a section surrounded by three back ticks. The results will look like it would in the terminal (monospaced).

code.chunk() is to write explicit code chunks in the .Rmd file; it captures the call and writes it to the file, to execute upon knitting.